O2328City Council Meeting 11-09-2010
Santa Monica, California
ORDINANCE NUMBER 232$ (CCS)
(City Council Series)
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF SANTA MONICA
ADOPTING THE CALIFORNIA BUILDING STANDARDS CODE
AND THE SANTA MONICA LOCAL AMENDMENTS
TO THE CALIFORNIA BUILDING STANDARDS CODE
WHEREAS, on November 13, 2007, the City Council adopted Ordinance Number
.2244 (CCS), which adopted by reference certain Technical Codes, the Santa Monica
local amendments to these Technical Codes and the California Building Standards
Code: and
WHEREAS, Health and Safety Code Section .18938 provides that the triennial
edition of the California Building Standards Code establishes building standards for all
occupancies throughout the State and requires that these standards incorporate the
latest editions of the Technical Codes with necessary California amendments; and
WHEREAS, on July 1, 2010, the State Building Standards Commission approved
and published the 2010 edition of the California Building Standards Code, which
incorporated the various editions of the Technical Codes by reference with necessary
California amendments; and
WHEREAS, Health and Safety Code Sections 18938 and 17958 make the
California Building Standards Code applicable to all cities and counties throughout
California, including the City of Santa Monica, 180 days after publication by the State
Building Standards Commission, which is January 1, 2011; and
WHEREAS, Health and Safety Code Section 18941.5 provides that the City may
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establish more restrictive building standards if they are reasonably necessary due to
local climatic, geological or topographical conditions; and
WHEREAS, the City Council has considered the 2010 edition of the California
Building Standards Code, which incorporates by reference the various editions of the
Technical Codes, and all of the referenced standards, tables, matrices and appendices.
of each of these codes therein; and
WHEREAS, based upon the findings contained in the Resolution adopted
concurrently with this Ordinance, the City Council has found that certain modifications
and additions to the California Building Standards Code are reasonably necessary
based upon local climatic, geological and topographical conditions;
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF SANTA MONICA
DOES ORDAIN AS FOLLOWS:
SECTION 1. Section 8.08.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.08.010 Purpose, scope and conflicting provisions.
(a) Purpose. The purpose of this Chapter is to provide for the administration
and enforcement of the Technical Codes adopted by this jurisdiction and codified
in Article VIII of the Municipal Code and to safeguard the public health, safety
and general welfare.
(b) Scope. The provisions of this Chapter shall serve as the administrative,
organizational and enforcement rules and regulations for the Technical Codes to
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regulate site preparation and construction, alteration, moving, demolition, repair,
use and occupancy of buildings, structures and building service equipment within
this jurisdiction.
(c) Conflicting Provisions. When conflicting provisions or requirements
occur between this Chapter, the Technical Codes and other codes or laws, the
most restrictive provisions shall govern. When there is a conflict between a
general requirement and a specific requirement, the specific requirement shall be
applicable. When conflicts occur between specific provisions of this Chapter and
administrative provisions in a Technical Code, the specific provisions of this
Chapter shall prevail.
SECTION 2. Section 8.08.020 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.08.020 Definitions.
For the purpose of this Chapter, certain terms, phrases, words and their
derivatives shall be construed as specified in this Section. Where terms are not defined,
they shall have their ordinarily accepted meanings within the context with which they are
used.
Addition is an extension or increase in floor area or height of a building or
structure.
Alter or Alteration is a change or modification in construction or building service
equipment.
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Approved, as to materials, types of construction, equipment and systems, refers
to approval by the Building Officer as the result of investigation and tests conducted by
the Building Officer, or by reason of accepted principles or tests by recognized
authorities, technical or scientific organizations.
Approved Agency is an established and recognized agency regularly engaged
in conducting tests or furnishing inspection services, when the agency has been
approved by the Building Officer.
Building is a structure used or intended for supporting or sheltering a use or
occupancy.
Building Code is the Building Code of the City of Santa Monica.
Building, Existing is a building for which a legal building permit has been
issued.
Building Officer is the Building Officer of the City of Santa Monica appointed
pursuant to Article VII of the City Charter, or his or her regularly authorized deputy.
Building Service Equipment is the plumbing, mechanical, electrical and
elevator equipment including piping, wiring, fixtures and other accessories which
provide sanitation, lighting, heating, ventilation, cooling, refrigeration, fire-fighting and
transportation facilities essential to the occupancy of the building or structure for its
designated use.
Code and This Code is the Santa Monica Municipal Code, unless otherwise
noted.
Electrical Code is the Electrical Code of the City of Santa Monica.
Energy Code is the Energy Code of the City of Santa Monica.
Green Building Code is the Green Building Standards Code of the City of
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Santa Monica.
Jurisdiction, as used in this Code, is the City of Santa Monica..
Listed and Listing are terms referring to equipment and materials included in a
list published by an approved testing laboratory, inspection agency, or other
organization concerned with product evaluation that maintains periodic inspection of
current productions of listed equipment or materials. The published list shall state that
the material or equipment complies with approved nationally recognized codes,
standards or tests and has been tested or evaluated and found suitable for use in a
specified manner.
Mechanical Code is the Mechanical Code of the City of Santa Monica.
Occupancy is the purpose for which a building, or part thereof, is used or
intended to be used.
Owner is any person, agent, firm or corporation having a legal or equitable
interest in the property.
Permit is an official document or certificate issued by the Building Officer authorizing
pertormance of a specified activity.
Person is a natural person, heirs, executors, administrators or assigns, and also
includes a firm, partnership or corporation, its or their successors or assigns, or the
agent of any of the aforesaid.
Plumbing Code is the Plumbing Code of the City of Santa Monica.
Repair is the reconstruction or rehewal of any part of an existing building,
structure or building service equipment for the purpose of its maintenance.
Residential Code is the Residential Code of the City of Santa Monica.
Shall, as used in this Code, is mandatory.
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Structural Observation means the visual observation of the structural system,
for general conformance to the approved plans and specifications, at significant
construction stages and at completion of the structural system.
Structure is that which is built or constructed, an edifice or building of any kind,
or any piece of work artificially built up or composed of parts joined together in some
definite manner.
Technical Codes refer to those codes adopted by this jurisdiction containing the
provisions for design, construction, alteration, addition, repair, removal,
demolition, use, location, occupancy and maintenance of buildings and structures and
building service equipment as herein defined.
Valuation is the estimated fair market value of the cost of all construction work
for which the permit is issued as determined by the Building Officer. To determine the
valuation, the Building Officer may use the most current building valuation table
published by the International Conference of Building Officials or its successors, the
mean of three responsible bids from properly licensed contractors or any other
commonly accepted method to estimate construction costs.
SECTION 3. Section 8.08.030 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.08.030 Powers and duties of the Building Officer.
(a) General. The Building Officer is hereby authorized and directed to enforce
all the provisions of Article VIII of this Code and the referenced Technical Codes. For
such purposes, the Building Officer and his/her authorized deputies shall have the
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powers of a law enforcement officer.
The Building Officer shall have charge of the supervision and inspection of the
construction of all buildings and structures within the City and shall have power and be
required to:
(1) Examine building plans in order to determine conformity with State laws
and ordinances and issue building permits in connection therewith; and
(2) Enforce the laws and ordinances regulating the construction and
maintenance of buildings and other structures.
(b) Mobile home Parks. The Building Officer is hereby authorized and
directed to enforce the provisions of the Mobile home Parks Act, Division 2.1, Part 13 of
the Health and Safety Code and Title 25 California Code of Regulations and shall have
authority to promulgate and or adopt administrative regulations governing the appeal of
orders, decisions and determinations of the Building Officer for matters related to such
enforcement.
(c) Deputies. The Building Officer may appoint such number of technical
officers and inspectors and other employees as shall be authorized from time to time.
The Building Officer may deputize such inspectors or employees as may be necessary
to carry out the functions of this Chapter.
(d) Rules and Interpretations. The Building Officer shall have the power to
render interpretations, and to adopt and enforce supplemental rules and regulations as
may be deemed necessary to clarify the application of the provisions of this Chapter
and the referenced Technical Codes. Such interpretations, rules and regulations shall
be in conformity with the intent and purpose of this Chapter and the referenced
Technical Codes.
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(e) Right of Entry. When necessary to make an inspection to enforce any of
the provisions of this Chapter and the Technical Codes, or when the Building Officer
has reasonable cause to believe that there exists in any building or upon a premises a
condition which is contrary to or in violation of this Code, which makes the building or
premises unsafe, dangerous or hazardous, the Building Officer may enter the building
or premises at all reasonable times to inspect or to perform the duties imposed by this
Code. The Building Officer shall have recourse to all remedies provided by law to
secure entry.
(f) Orders to Stop Construction Work. When work is being done contrary
to any permit, to the provisions of the Technical Codes or ordinance implemented
through the enforcement of this Code, or other pertinent Federal, State or local
ordinances and. regulations, the Building Officer, or any subordinate authorized to act on
behalf of the Building Officer, may order the work stopped by notice in writing on
persons engaged in the doing or causing such work to be done. Any person in receipt
of such notice shall immediately comply with the stop work order.
(g) Suspension or Revocation of Permits or Certificate of Occupancy.
The Building Officer may, in writing, suspend or revoke a permit or Certificate of
Occupancy issued under the provisions of this Chapter whenever the permit or
Certificate of Occupancy has been issued in error, on the basis of incorrect information
supplied, without the payment of the required fees, or in violation of any Federal, State
or local ordinances or regulations.
Local ordinances and regulations include but shall not be limited to:
(1) Any provision of the approved plans, Technical Codes or any other
provision of the City' s Municipal Code, which is applicable to the work, including but not
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limited to exterior noise standards and permitted hours of operation pursuant to
Sections 4.12.130 and 4.12.140 of the Municipal Code.
(2) Any condition of City permit approval, including but not limited to, planning
and zoning requirements, required construction mitigation measures for occupied
buildings and adjacent properties and tenant protection during construction.
(3) Safety standards for onsite use or occupancy, adjacent properties or the
public way, as determined by the Building Officer.
(4) Any administrative citations and compliance orders including the payment
of any fines or penalties.
(5) Any air or water quality standards, including but not limited to asbestos
contamination.
(6) Any required license, security or insurance related to the work.
(h) Discontinue Use. When a building or structure or building service
equipment therein regulated by this Code and the Technical Codes is being used
contrary to the provisions of such codes, the Building Officer may order such use
discontinued by written notice served on any person causing such use to be continued.
Such person shall discontinue the use within the time prescribed by the Building Officer
after receipt of such notice to make the structure, or portion thereof, comply with the
requirements of such codes.
(i) Authority to Disconnect Utilities. The Building Officer or the Building
Officer' s authorized representative shall have the authority to disconnect a utility
service or energy supplied to the building, structure or building service equipment
therein regulated by this Code or the Technical Codes in case of emergency where
necessary to eliminate an immediate hazard to life or property.
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The Building Officer shall whenever possible notify the serving utility, the owner
and occupant of the building, structure or building service equipment of the decision to
disconnect prior to taking such action, and shall notify such serving utility, owner and
occupant of the building, structure or building service equipment, in writing, of such
disconnection immediately thereafter.
Q) Authority to Condemn Building Service Equipment. When the Building
Officer ascertains that building service equipment regulated in the Technical Codes has
become hazardous to life, health or property, or has become unsanitary, the Building
Officer shall order in writing that such equipment either be removed or restored to a safe
or sanitary condition, as appropriate. The written notice itself shall fix a time limit for
compliance with such order. Defective building service equipment shall not be
maintained after receiving such notice.
When such equipment or installation is to be disconnected, the Building Officer
shall give a written notice of such disconnection and causes therefore to the serving
utility within twenty-four hours, the owner and occupant of such building structure or
premises.
When any building service equipment is maintained in violation of the Technical
Codes and in violation of a notice issued pursuant to the provisions of this Section, the
Building Officer shall institute appropriate action to prevent, restrain, correct or abate the
violation.
(k) Approval of Alternate Materials, Methods of Design and Methods of
Construction. The Building Officer may approve an alternate material, method of
design or method of construction not specifically prescribed by the Technical Codes,
provided the Building Officer finds that the proposed design is satisfactory and complies
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with the provisions of the Technical Codes and that the material, method or work offered
is, for the purpose intended, at least the equivalent of that prescribed in the Technical
Codes in suitability, strength, effectiveness, fire resistance, durability, safety and
sanitation. The Building Officer shall require that sufficient evidence or proof be
submitted to substantiate claims that may be made regarding its use.
(I) Granting of Modifications to the Technical Codes. Whenever there are
practical difficulties involved in carrying out the provisions of the Technical Codes, the
Building Officer may grant modifications for individual cases based on the following
findings:
(1) A special individual reason makes the strict letter of the Technical Code
impractical; and
(2) The modification is in conformity with the. intent and purpose of the
Technical Code; and
(3) The modification provides equivalent suitability, strength, effectiveness,
fire resistance, durability, safety and sanitation; and
(4) The modification does not lessen health, life safety and fire-safety
requirements or any degree of structural integrity.
The jurisdiction shall maintain records for granting modifications for the period
required for the retention of public records.
(m) Requiring of Tests. Whenever there is insufficient evidence of
compliance with the provisions of the Technical Codes or evidence that materials or
construction do not conform to the requirements of the Technical Codes, the Building
Officer may require tests as evidence of compliance to be made at no expense to the
jurisdiction.
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Test methods shall be as specified by the Technical Codes or by other
recognized test standards. In the absence of recognized and accepted test methods,
the Building Officer shall determine test procedures. Tests shall be made by an
approved agency. The Building Officer shall retain reports of such tests for the period
required for the retention of public records.
(n) License Special Inspectors and Approved Fabricators.
(o) Maintaining Records. The Building Officer shall maintain sufficient
records to show the approved use, occupancy and type of construction for all structures
requiring permits and the applicable code standards applicable to any existing building.
Such records shall include any special administrative approvals including alternate
materials, methods of design and construction, modifications and tests.
The Building Officer shall also maintain an official copy of the plans of every
building issued a building permit during the life of the building except for:
(1) Single family dwelling not more than two stories and basement in height
and their accessory structures.
(2) Any one-story building where the span between bearing walls does not
exceed twenty-five feet except for steel frame or concrete buildings.
(3) Any building containing a bank, other financial institution, or public utility.
These exceptions shall not apply to a community apartment project,
condominium project, planned development, or a stock cooperative as defined in
Section 1351 of the Civil Code.
(p) Cooperation of Other Officials and Officers. The Building Officer may
request, and shall receive, the assistance and cooperation of other officials of this
jurisdiction so far as is required in the discharge of the duties required by this Code or
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other pertinent laws or ordinances.
(q) Liability. The Building Officer charged with the enforcement of this Code
and the Technical Codes, acting in good faith and without malice in the discharge of
duties, shall not thereby be rendered personally liable for damage that may accrue to
persons or property as a result of an act or omission in the discharge of the assigned
duties. A suit brought against the Building Officer or employee because of such act or
omission performed by the Building Officer or employee in the enforcement of the
provisions of such codes or other pertinent laws or ordinances implemented through the
enforcement of this Code or enforced by the code enforcement agency shall be
defended by this jurisdiction until final termination of such .proceedings, and any
judgment resulting therefrom, shall be assumed by this jurisdiction.
This Section shall not be construed to relieve from or lessen the responsibility of
any person owning, operating or controlling a building, structure or building service
equipment therein for damages to persons or property caused by defects, nor shall the
code enforcement agency or its parent jurisdiction be held as assuming such liability by
reason of the inspections authorized by this Code or permits or certificates issued under
.this Code.
SECTION 4. Section 8.08.050 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.08.050 Permits required.
(a) General. No person shall erect, construct, enlarge, alter, repair, move,
improve, remove, convert or demolish any building, structure or building service
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equipment regulated by this Chapter and the Technical Codes without first obtaining an
appropriate permit for each building, structure or building service equipment from the
Building Officer except as specified in this Section.
No person shall do any exterior sandblasting within the City without first obtaining
an appropriate permit for each separate work location or contractor.
No person shall perform any excavation or grading work without first obtaining an
appropriate permit from the Building Officer except as specified in this Section.
No person shall erect any temporary structures within the City without first
obtaining an appropriate permit from the Building Officer except as specified in this
Section.
Exemption from the permit requirements of this Chapter shall not be deemed to
grant authorization for any work to be done in violation of the provisions of the Technical
Codes or any other laws or ordinances.
(b) Temporary Structures. Temporary structures such as reviewing stands,
platforms, displays and other miscellaneous structures, sheds, canopies or fences used
for the protection of the public around and in conjunction with construction work may be
erected by special permit from the Building Officer for a limited period of time. Buildings
or structures erected under a special permit need not comply with the type of
construction or fire-resistive time periods required by the Building Code. Temporary
buildings or structures shall be completely removed upon the expiration of the time limit
stated in the permit.
(c) Work Exempt from Building Permit. A building permit shall not be
required for the following:
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(1) One-story detached accessory buildings not more than fourteen feet in
height when used as tool and storage sheds, playhouses and similar uses, provided the
floor area does not exceed one hundred twenty square feet, the structure does not
contain electrical, mechanical or plumbing work and the structure conforms to the
applicable zoning regulations of Chapter 9.04 of the Municipal Code.
(2) Exterior freestanding walls and fences not over six feet high.
(3) Oil derricks.
(4) Movable cases, counters and partitions not over five feet nine inches high.
(5) Retaining walls that are not over four feet in height measured from the
bottom of the footing to the top of the wall, unless supporting a surcharge or impounding
flammable liquids.
(6) Water tanks supported directly upon grade if the capacity does not exceed
five thousand gallons and the ratio of height to diameter or width does not exceed 2:1.
(7) Platforms, walks and driveways not more than thirty inches above grade
and not over or surcharging any basement or story below.
(8) Painting, papering and similar finish work, including color or texture
coating of exterior plaster.
(9) Flooring when installed on a concrete floor slab or when weighing not
more that four pounds per square foot or replacing the same weight per square foot.
(10) Temporary motion picture, television and theater stage sets and scenery.
(11) Window awnings supported by an exterior wall when projecting not more
than fifty-four inches for one and two family dwellings and their accessory structures.
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(12) Prefabricated swimming pools accessory to one and two family dwellings
in which the pool walls are entirely above the adjacent grade and the capacity
does not exceed five thousand gallons.
(d) Work Exempt from a Grading Permit. A grading permit is not required
for the following:
(1) Any grading work authorized by a valid combination-building permit.
(2) An excavation below finished grade for basements and footings of a building,
retaining wall or other structure authorized by a valid building permit.
(3) Cemetery graves.
(4) Refuse disposal sites controlled by other regulations.
(5) Excavations for wells or tunnels or utilities.
(6) Mining, quarrying, excavating, processing or stockpiling of rock, sand, gravel,
aggregate or clay where established. and provided for by law, provided such
operations do not affect the lateral support or increase the stresses in or
pressure upon any adjacent or contiguous property.
(7) Exploratory excavations under the direction geotechnical engineers or
engineering geologists.
(8) An excavation that is less than two feet in depth or does not create a cut
slope greater than five feet in height and steeper than one unit vertical in one and
one-half units horizontal (sixty-six and seven-tenths percent slope).
(9) A fill less than one foot in depth and placed on natural terrain with a slope
flatter than one unit vertical in five units horizontal (twenty percent slope), or less
than three feet in depth, not intended to support structures, that does not exceed
fifty cubic yards on any one lot and does not obstruct a drainage course.
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(e) Work Exempt from Plumbing Permit. A plumbing permit shall not be
required for the following:
(1) Any plumbing work authorized by a valid combination-building permit.
(2) The stopping of leaks in drains, soil, waste or vent pipe, provided, however,
that should any concealed trap, drain pipe, soil, waste or vent pipe become
defective and it becomes necessary to remove and replace the same with new
material, the same shall be considered as new work and a permit shall be
procured and inspection made as provided in this Code.
(3) The clearing of stoppages or the repairing of leaks in pipes, valves or
fixtures, nor. for the removal and reinstallation of water closets, provided such
repairs do not involve or require the replacement or rearrangement of valves,
pipes or fixtures.
(f) Work Exempt from Electrical Permit. An electrical permit shall not be
required for the following:
(1) Any electrical work authorized by a valid combination-building permit.
(2) Portable motors or other portable appliances energized by means of a
cord or cable having an attachment plug end to be connected to an approved receptacle
when the Electrical Code permits that cord or cable.
(3) Repair or replacement of fixed .motors, transformers or fixed approved
appliances of the same type and rating in the same location.
(4) Temporary decorative lighting.
(5) Repair or replacement of current-carrying parts of any switch, contactor or
control device.
(6) Reinstallation of attachment plug receptacles, but not the outlets therefor.
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(7) Repair or replacement of any over-current device of the required capacity
in the same location.
(8) Repair or replacement of electrodes or transformers of the same size and
capacity for signs or gas tube systems.
(9) Taping joints.
(10) Removal of electrical wiring. ,
(11) Temporary wiring for experimental purposes in suitable experimental
laboratories.
(12) The wiring for temporary theater, motion picture or television stage sets.
(13) Electrical wiring, devices, appliances, apparatus or equipment operating at
less than twenty-five volts and not capable of supplying more than fifty watts of energy.
(14) Low-energy power, control and signal circuits of Class II and Class III as
defined in the Electrical Code.
(15) Installation, alteration or repair of electrical wiring, apparatus or equipment
or the generation, transmission, distribution or metering of electrical energy or in the
operation of signals or the transmission of intelligence by a public or private utility in the
exercise of its function as a serving utility.
(g) Work Exempt from Mechanical Permit. A mechanical permit shall not be
required for the following:
(1) Any mechanical work authorized by a valid combination-building permit.
(2) Portable heating appliance, ventilating equipment, cooling unit or
evaporative cooler.
(3) .Closed system of steam, hot or chilled water piping within heating or
cooling equipment regulated by the Mechanical Code.
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(4) Replacement of any component part of assembly of an appliance that
does not alter its original approval and complies with other applicable
requirements of the technical codes.
(5) Refrigerating equipment that is part of the equipment for which a permit
has been issued pursuant to the requirements of the technical codes.
(6) A unit refrigerating system as defined in the Mechanical Code.
SECTION 5. Section 8.12.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.12.010 Adoption.
That certain document entitled "California Building Code, 2010 Edition, which
adopts by reference the International Building Code, 2009 Edition, as published
by the California Building Standards Commission and the International Code
Council including "Seismic Hazard Maps," as published by the United States
Geological Survey (excluding Chapter 1, Division II, 16A, 17A, 18A, 19A, 21A,
22A), including Chapter 1, Division I, Appendices I, J, are hereby adopted with
the local amendments and provisions of this Chapter, and with Chapters 8.16,
8.20 and 8.48 through 8.84 of the Santa Monica Municipal Code, as the Building
Code of the City of Santa Monica.
SECTION 6. Section 8.12.030 of the Santa Monica Municipal Code is hereby
repealed.
SECTION 7. Section 8.12.040 of the Santa Monica Municipal Code is hereby
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amended to read as follows:
8.12.040 Essential facilities.
The following facilities are designated as essential facilities, which are necessary
for emergency operations subsequent to a natural or man-made disaster: police
stations, fire stations and City Hall.
SECTION 8. Section 8.16.020 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.16.020 General structural design provisions.
(a) Tilt up Systems. Modify Section 12.2.1 of ASCE 7 by adding the
following:
12.2.1.1 Determination of Seismic Force-Resisting Systems for Tilt-up
Building. Tilt-up buildings bearing wall system and building frame system shall be
classified as reinforced concrete structural wall system. Only special reinforced concrete
structural walls shall be permitted in Seismic Design Categories D, E and F.
(b) Re-entrant Corners. Modify Section 12.12.4 of ASCE 7 by adding the
following:
12.12.4.1 Re-entrant Corners. For buildings with re-entrant corners the return
walls shall be considered for deformation compatibility with the diaphragm and shall be
either seismically isolated from the diaphragm or attached by a connection of sufficient
capacity to integrate their load into the diaphragm.
(c) Minimum Base Shear. Revise equation 12.8-5 of ASCE 7 as follows:
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Cs = 0.044Spsl >_ 0.01
(d) P-Delta Effects. Revise equation 12.8-16 of ASCE 7 as follows:
P,AI
8=
~s~a
(e) Subdiaphragm Design. 1613.13 ASCE 7, Section 12.11.2.2.3. Modify
ASCE 7. Section 12.12.4 to read as follows:
12.11.2.2.3 Wood Diaphragms. In wood diaphragms, the continuous ties shall
be in addition to the diaphragm sheathing. Anchorage shall not be accomplished by use
of toe nails or nails subject to withdrawal nor shall wood ledgers or framing be used in
cross-grain bending or cross-grain tension. The diaphragm sheathing shall not be
considered effective as providing ties or struts required by this section.
For structures assigned to Seismic Design Category D, E or F, wood diaphragms
supporting concrete or masonry walls shall comply with the following:
1. The spacing of continuous ties shall not exceed 40 feet. Added chords of
diaphragms may be used to form subdiaphragms to transmit the anchorage forces to
the main continuous crossties.
2. The maximum diaphragm shear used to determine the depth of the
Subdiaphragm shall not exceed 75% of the maximum diaphragm shear.
(f) Building Separations. Delete Section 12.12.3 of ASCE 7 and amend
Equation 16-44 of Section 1613.6.7 of the 2010 California Building Code to read as
follows:
1613.6.7 Minimum distance for building separation. All buildings and structures
shall be separated from adjoining structures. Separation shall allow for the maximum
inelastic response displacement (S~„~) . &~ shall be determined at the critical locations
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with consideration for both translational and torsional displacements of the structure
using Equation 16-44.
~M = Cdr (Equation 16-44)
where:
Cd =Deflection amplification factor in Table 12.2-1 of ASCE 7.
d„aX =Maximum displacement defined in Section 12.8.4.3 of ASCE 7.
Adjacent buildings on the same property shall be separated by a distance not
less than SMT, determined by Equation 16-45.
~~ ~S~,a + {~~~ (Equation 16-45)
Where:
SM~ and S~„~z = The maximum inelastic response displacements of the adjacent buildings
in accordance with Equation 16-44.
Where a structure adjoins a property line not common to a public way, the structure
shall also be set back from the property line by not less than the maximum inelastic
response displacement, ~ of that structure.
(g) Vertical Combination of Lateral Force Resisting Systems. Modify
ASCE 7 Section 12.2.3.1 Exception 3 to read as follows:
3. Detached one- and two-family dwellings up to two stories in height of light frame
construction.
(h) Buckling Restrained Braced Frame System. Correct values per ASCE
7 Table 12.8-2 as follows:
Structure Type !zf Ct X
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Eccentrically braced steel frames and
0.03 0.75
buckling-restrained braced frames
(i) Assumption of Flexible Diaphragm.
Exception: For buildings two stories or less in height with diaphragm constructed of
wood structural panels, the cantilevered portion is permitted to be idealized as flexible,
provided the length of the overhang does not exceed fifteen percent of the dimension
between the lateral force resisting lines of resistance adjacent to the cantilevered
portion in the direction considered. Nor shall the overhang dimension exceed twenty-
five percent of the width of the diaphragm, where the width is the dimension
perpendicular to the direction of applied lateral force.
Q) Suspended ceilings. Add Section 1613.16 to Chapter 16 of the 2010
California Building Code to read as follows:
1613.16 Suspended Ceilings. Minimum design and installation standards for
suspended ceilings shall be determined in accordance with the requirements of Section
2506.2.1 of this Code and this subsection.
1613.16.1 Scope. This part contains special requirements for suspended ceilings
and lighting. systems. Provisions of Section 13.5.6 of ASCE 7 shall apply except as
modified herein.
1613.16.2 General. The suspended ceilings and lighting systems shall be limited
to 6 feet (1828 mm) below the structural deck unless the lateral bracing is designed by a
licensed engineer or architect.
1613.16.3 Design and Installation Requirements.
1613.16.3.1 Bracing at Discontinuity. Bracing to the structure shall be provided
at changes in the ceiling. plane elevation or at discontinuities in the ceiling grid system.
23
1613.16.3.2 Support for Appendages. Cable trays, electrical conduits and
piping shall be independently supported and independently braced from the structure.
1693.16.3.3 Sprinkler Heads. All sprinkler heads (drops) except fire-resistance-
rated floor/ceiling or roof/ceiling assemblies, shall be designed to allow for free
movement of the sprinkler pipes with oversize rings, sleeves or adaptors through the
ceiling tile, in accordance with Section 13.5.6.2.2 (e) of ASCE 7.
Sprinkler heads penetrating fire-resistance-rated floor/ceiling or roof/ceiling assemblies
shall comply with Section 713 of this Code.
1613.16.3.4 Perimeter Members. A minimum wall angle size of at least a two
inch (51 mm) horizontal leg shall be used at perimeter walls and interior full height
partitions. The first ceiling the shall maintain 3/4 inch (19 mm) clear from the finish wall
surface. An equivalent alternative detail that will provide sufficient movement due to
anticipated lateral building displacement may be used in lieu of the long leg angle
subject to the approval of the Building Officer.
1613.16.4 Special Requirements for Means of Egress. Suspended ceiling
assemblies located along means of egress serving an occupant load of 30 or more shall
comply with the following provisions.
1613.16.4.1 General. Ceiling suspension systems shall be connected and
braced with vertical hangers attached directly to the structural deck along the means of
egress serving an occupant load of 30 or more and at lobbies accessory to Group A
Occupancies.. Spacing of vertical hangers shall not exceed 2 feet (610 mm) on center
along the entire length of the suspended ceiling assembly located along the means of
egress or at the lobby.
1613.16.4.2 Assembly Device. All lay-in panels shall be secured to the
24
suspension ceiling assembly with two hold-down clips minimum for each the within a 4-
foot (1219 mm) radius of the exit lights and exit signs.
1613.16.4.3 Emergency Systems. Independent supports and braces shall be
provided for light fixtures required for exit illumination. Power supply for exit illumination
shall comply with the requirements of Section 1006.3 of this Code.
1613.16.4.4 Supports for Appendage. Separate support from the structural
deck shall be provided for all appendages such as light fixtures, air diffusers, exit signs,
and similar elements.
(k) Special Inspection for Concrete Construction. Amend Section 1704.4 of
the 2010 California Building Code to read as follows:
1704.4 Concrete Construction. The special inspections and verifications for
concrete construction shall be as required by this section and Table 1704.4.
Exceptions: Special inspection shall not be required for:
1. Isolated spread concrete footings of buildings three stories or less above
grade plane that are fully supported on earth or rock, where the structural design of the
footing is based on a specified compressive strength, f~, no greater than 2,500 pounds
per square inch (psi) (17.2 Mpa):
2. Continuous concrete footings supporting walls of buildings three stories or
less in height that are fully supported on earth or rock where:
2.1. The footings support walls of light-frame construction;
2:2. The footings are designed in accordance with Table 1805.4.2; or
2.3. The structural design of the footing is based on a specified compressive
strength, f'~, no greater than 2,500 pounds per square inch (psi) (17.2 Mpa), regardless
of the compressive strength specified in the construction documents or used in the
25
footing construction.
3. Nonstructural concrete slabs supported directly on the ground, including
prestressed slabs on grade, where the effective prestress in the concrete is less than
150 psi (1.03 Mpa).
4. Concrete patios, driveways and sidewalks, on grade.
(I) Driven Deep Foundations. Amend Section 1704.8 of the 2010 California
Building Code to read as follows:
1704.8 Driven deep foundations and connection grade beams. Special
inspections shall be performed during. installation and testing of driven deep foundation
elements as required by Table 1704.8. Special inspections shall be performed for
connection grade beams in accordance with Section 1704.4 for structures assigned to
Seismic Design Category D, E or F. The approved geotechnical report, and the
construction documents prepared by the registered design professionals, shall be used
to determine compliance.
(m) Cast-In Place Deep Foundations. Amend Section 1704.9 of the 2010
California Building Code to read as follows:
1704.9 Cast-in-place deep foundations and connection grade beams.
Special inspections shall be performed during installation and testing of cast-in-place
deep foundation elements as required by Table 1704.9. Special inspections shall be
performed for connection grade beams in accordance with Section 1704.4 for structures
assigned to Seismic Design Category D, E or F. The approved geotechnical report, and
the construction documents prepared by the registered design professionals, shall be
used to determine compliance.
(n) Seismic Resistance Inspection. Amend Section 1705.3 of the 2010
26
California Building Code to read as follows:
1705.3 Seismic resistance. The statement of special inspections shall include
seismic requirements for cases covered in Sections 1705.3.1 through 1705.3.5.
Exception: Seismic requirements are permitted to be excluded from the statement of
special inspections for structures designed and constructed in accordance with the
following:
1. The structure consists of light-frame construction; the design spectral
response acceleration at short periods, Sps, as determined in Section 1613.5.4, does
not exceed 0.5g; and the height of the structure does not exceed 35 feet (10 668 mm)
above grade plane; or
2. The structure is constructed using a reinforced masonry structural system
or reinforced concrete structural system; the design spectral response acceleration at
short periods, Sps, as determined in Section 1613.5.4, does not exceed 0.5g, and the
height of the structure does not exceed 25 feet (7620 mm) above grade plane; or
3. Detached one- or two-family dwellings not exceeding two stories above
grade plane, provided the structure is not assigned to Seismic Design Category D, E or
F and does not have any of the following plan or vertical irregularities in accordance
with Section 12.3.2 of ASCE 7:
3.1 Torsional irregularity.
3.2 Nonparallel systems.
3.3 Stiffness irregularity-extreme soft story and soft story.
3.4 Discontinuity in capacity-weak story.
(o) Structural Observation -General. Amend Section 1710.1 of the 2010
California Building Code to read as follows:
27
1710.1 General .Where requited by the provisions of Section 1710.2 or 1710.3,
the owner shall employ structural observer to perform structural observations as defined
in Section 1702. The structural observer shall be one of the following individuals:
1. The registered design professional responsible for the structural design, or
2. A registered design professional designated by the registered design
professional responsible for the structural design.
Prior to the commencement of observations, the structural observer shall submit to the
building official a written statement identifying the frequency and extent of structural
observations.
The owner or owner's representative shall coordinate and call a preconstruction
meeting between the structural observer, contractors, affected subcontractors and
special inspectors. The structural observer shall preside over the meeting. The purpose
of the meeting shall be to identify the major structural elements and connections that
affect the vertical and lateral load resisting systems of the structure and to review
scheduling of the required observations. A record of the meeting shall be included in the
report submitted to the building officer.
Observed deficiencies shall be reported in writing to the owner or owner's
representative, special inspector, contractor and the building official. Upon .the form
prescribed by the building official, the structural observer shall submit to the building
official a written statement at each significant construction stage stating that the site
visits have been made and identifying any reported deficiencies which, to the best of the
structural observer's knowledge, have not been resolved. A final report by the structural
observer which states that all observed deficiencies have been resolved is required
before acceptance of the work by the building official.
28
(p) Structural Observation -Seismic. Amend Section 1710.2 of the 2010
Edition of the California Building Code are amended to read as follows:
1710.2 Structural observation for seismic resistance. Structural observations
shall be provided for those structures assigned to Seismic Design Category D, E or F,
as determined in Section 1613, where one or more of the following conditions exist:
1. The structure is classified as Occupancy Category III or IV in accordance
with Table 1604.5.
2. The height of the structure is greater than 75 feet (22860 mm) above the
base.
3. The structure is classified as Occupancy Category I or II in accordance
with Table 1604.5, and a lateral design system is required to be designed by a
registered designed professional.
Exception: One-story wood framed Group R-3 and Group U Occupancies less
than 2000 square feet in area, provided the adjacent grade is not steeper than 1 unit
vertical in 10 units horizontal (10% sloped), assigned to Seismic Design Category D.
4. When so designated by the registered design professional responsible for
the structural design.
5. When such observation is specifically required by the building official.
SECTION 9. Section 8.16.030 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.16.030 Foundations.
(a) General. Modify Section 1805.1 of the California Building Code as follows:
29
1805.1 General. The top surface of footings shall be level. The bottom surface
of footings is permitted to have a slope not exceeding one unit vertical in ten units
horizontal (ten percent slope). Footings shall be stepped where it is necessary to
change the elevation of the top surface of the footing or where the surface of the ground
slopes more than one unit vertical in ten units horizontal (ten percent slope). This
stepping requirement shall also apply to the top surface of grade beams supporting
walls. Footings shall be reinforced with minimum of four one-half-inch diameter (12.7
mm) deformed reinforcing bars. Two bars shall be place at the top and bottom of the
footings as shown in Figure 1805.1 of this code.
:~>
r .. .r. fscmmag7raaq.
{ ~.
~~ -
~~ ~~~
Figure 1805.1
(b) Footing for Interior Bearing Walls. Modify Table 1805.4.2 of the
California Building Code by deleting Footnote c.
(c) Wood and Timber Footing. Delete Sections 1805.4.5 and 1805.4.6 of
the California Building Code in their entirety.
(d) Delete Section 1805.5 of the California Building Code in its entirety and
replace with the following:
1805.5 Foundation Walls. Concrete and masonry foundation walls exceeding
eighteen inches in height shall be designed in accordance with Chapter 19 or 21 of the
California Building Code, respectively.
30
1805.5.1 Foundation Wall Drainage. Foundation walls shall be designed to
support the weight of the full hydrostatic pressure of unretained backfill unless a
drainage system in accordance with Sections 1807.4.2 and 1807.4.3 is installed.
(e) Permanent wood foundation systems. Amend Section 1807.1.4 of the
2010 California Building Code to read as follows:
1807.1.4 Permanent wood foundations systems. Permanent wood foundation
systems shall be designed and installed in accordance with AF&PA PWF. Lumber and
plywood shall be treated in accordance with AWPA U1 (Commodity Specification A,
Use Category 4B and Section 5.2) and shall be identified in accordance with Section
2303.1.8.1. Permanent wood foundation systems shall not be used for structures
assigned to Seismic Design Category D, E or F.
(f) Prescriptive design of foundation walls. Amend Section 1807.1.6 of the
2010 California Building Code to read as follows:
1807.1.6 Prescriptive design of concrete and masonry foundation walls.
Concrete and masonry foundation walls that are laterally supported at the top and
bottom shall be permitted to be designed and constructed in accordance with this
section. Prescriptive design of foundation walls shall not be used for structures assigned
to Seismic Design Category D, E or F
(g) Prescriptive footings. Amend Section 1809.7 and Table 1809.7 of the 2010
Edition of the California Building Code are amended to read as follows:
1809.7 Prescriptive footings for light-frame construction. Where a specific
design is not provided, concrete or masonry-unit footings supporting walls of light-frame
construction shall be permitted to be designed in ,accordance with Table 1809.7.
Prescriptive footings in Table 1809.7 shall not exceed one story above grade plane for
31
structures assigned to Seismic Design Category D, E or F.
TABLE 1809.7
PRESCRIPTIVE FOOTINGS SUPPORTING WALLS OF
LIGHT-FRAME CONSTRUCTION a, b, c, d, e
NUMBER OF
FLOORS
SUPPORTED WIDTH OF THICKNESS OF
BY THE FOOTING FOOTING
FOOTING r (inches) (inches)
1 12 6
2 15 6
3 18 8
For SI: 1 inch = 25.4 mm, 1 foot= 304.8 mm
a. Depth of footings shall be in accordance with Section 1809.4.
b. The ground under the floor shall be permitted to be excavated to the elevation of
the top of the footing.
c. See Section 1908 for additional requirements for concrete footings of structures
assigned to Seismic Design Category C, D, E or F.
d. For thickness of foundation walls, see Section 1807.1.6.
e. Footings shall be permitted to support a roof addition to the stipulated number of
floors. Footings supporting roof only shall be as required for supporting one floor.
(h) Timber footings. Amend Section 1809.12 of the 2010 California Building Code
32
to read as follows:
1809.12 Timber footings. Timber footings shall be permitted for buildings of Type V
construction and as otherwise approved by the building official. Such footings shall be
treated in accordance with AWPA U1 (Commodity Specification A, Use Category 4B).
Treated timbers are not required where placed entirely below permanent water level, or
where used as capping for wood piles that project above the water level over
submerged or marsh lands. The compressive stresses perpendicular to grain in
untreated timber footing supported upon treated piles shall not exceed 70 percent of the
allowable stresses for the species and grade of timber as specified in the AF&PA NDS.
Timber footings shall not be used in structures assigned to Seismic Design Category D,
E or F.
(i) Timber. Amend Section 18010.3.2.4 of the 2010 Edition of the California
Building Code to read as follows:
1810.3.2.4 Timber. Timber deep foundation elements shall be designed as piles or
poles in accordance with AF&PA NDS. Round timber elements shall conform to ASTM
D 25. Sawn timber elements shall conform to DOC PS-20. Timber deep foundations
shall not be used in structures assigned to Seismic Design Category D, E or F.
SECTION 10. Section 8.16.040 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.16.040 Concrete.
(a) Structural Plain (Unreinforced) Concrete. Delete Sections 1908.1.8,
1909 of the California Building Code in their entirety and replace with following:
33
1909.1 Scope. Plain concrete shall not be used other than as fill. The minimum
specified compression strength of concrete used as fill shall be one thousand five
hundred psi (10.3 MPa) at twenty-eight days.
(b) Concrete Special Moment Frame Column Confinement.
(1) Modify ACI 318 Section 21.4.4.1 by adding a new item as follows:
21.4.4.1(f). Where the calculated point of contraflexure is not within the middle
half of the member clear height, provide transverse reinforcement as specified in AC
1318 Sections 21.4.4.1, Items (a) through (c), over the full height of the member.
(2) Modify ACI 318 by adding Section 21.4.4.7 as follows:
21.4.4.7. At any section where the design strength, cpPn, of the column is less
than the sum of the shears Ve computed in accordance with ACI 318 Sections 21.3.4.1
and 21.4.5.1 for all the beams framing into the column above the level under
consideration, transverse reinforcement as specified in ACI 318 Sections 21.4.4.1
through 21.4.4.3 shall be provided. For beams framing into opposite sides of the
column, the moment components may be assumed to be of opposite sign. For the
determination of the design strength, cpPn, of the column, these moments may be
assumed to result from the deformation of the frame in any one principal axis.
(c) Special Reinforced Concrete Wall Capacity.
(1) Modify ACI 318by adding Section 21.7.4.6 as follows:
21.7.4.6. Walls and portions of walls with Pu > 0.35Po shall not be considered to
contribute to the calculated strength of the structure for resisting earthquake-induced
forces. Such walls shall conform to the requirements of ACI 318 Section 21.11.
(d) Reinforced Concrete Diaphragms.
(4) Modify ACI 318 Section 21.9.4 by adding the following:
34
21.9.4.1. Collector and boundary elements in topping slabs placed over precast
floor and roof elements shall not be less than three inches (76 mm) or six db thick,
where db is the diameter of the largest reinforcement in the topping slab.
(e) Tilt Up Buildings.
Modify Section 1908.1.4 of the California Building Code as follows:
21.2.1.4. For structures assigned to Seismic Design Category D, E or F, special
moment frames, special reinforced concrete structural walls, diaphragms and trusses
and foundations complying with Sections 21.2 through Sections 21.10 shall be used to
resist forces induced by earthquake motions. Members not proportioned to resist
earthquake forces shall comply with Section 21.11.
(f) Deflection of Slender Walls.
(1) Modify equation (14-7) of ACI 318 Section 14.8.3 as follows:
I~~ shall be calculated by Equation (14-7), and Ma shall be obtained by iteration of
deflections.
I =F~~+P ~~d-c~+~
" E~ fF 2d 3
(14-7)
and the value Es1E~ shall not be taken less than six.
(2) Modify ACI 318 Section 14.8.4 as follows:
14.8.4. Maximum out-of-plane deflection, 4s, due to service loads, including P4
effects, shall not exceed /150.
If Ma, maximum moment at mid-height of wall due to service lateral and eccentric loads,
including P4 effects, exceed (2/3)M~,, As shall be calculated by Equation (14-8):
35
2
-~~ rr
ild,-3~
(14-8)
where:
~ _ 5M~t~ ~ _ 5~dte
a ~E°~g and p 48E~Ip
If Ma does not exceed (2/3)M~,, 4S shall be calculated by Equation (14-9):
dS _ ~~°~~S (14-9)
(g) Reinforcement. Amend Section 1908.1 to read as shown below and add
Sections 1908.1.11 through 1908.1:14 to Chapter 19 of the 2010 California Building
Code to read as follows:
1908.1 General. The text of ACI 318 shall be modified as indicated in Sections
1908.1.1 through 1908.1.14.
1908.1.11 ACI 318, Section 21.6.4.1. Modify ACI 318, Section 21.6.4.1, to read
as follows:
Where the calculated point of contraflexure is not within the middle half of the
member clear height, provide transverse reinforcement as specified in ACI 318 Sections
21.6.4.1, Items (a) through (c), over the full height of the member.
1908.1.12 ACI 318, Section 21.6.4. Modify ACI 318, Section 21.6.4, by adding
Section 21.6.4.8 to read as follows:
21.6.4.8 - At any section where the design strength, cpP,,, of the column is less
than the sum of the shears Ve computed in accordance with ACI 318 Sections 21.5.4.1
36
and 21.6.5.1 for all the beams framing into the column above the .level under
consideration, transverse reinforcement as specified in ACI 318 Sections 21.6.4.1
through 21.6.4.3 shall be provided. For beams framing into opposite sides of the
column, the moment components may be assumed to be of opposite sign. For the
determination of the design strength, cpP,,, of the column, these moments may be
assumed to result from the deformation of the frame in any one principal axis.
1908.1.13 ACI 318, Section 21.9.4. Modify ACI 318, Section 21.9.4, by adding
Section 21.9.4.6 to read as follows:
21.9.4.6 -Walls and portions of walls with P„ > 0.35Po shall not be considered to
contribute to the calculated strength of the structure for resisting earthquake-induced
forces. Such walls shall conform to the requirements of ACI 318 Section 21.13.
1908.1.14 ACI 318, Section 21.11.6. Modify ACI 318, Section 21.11.6, by adding
the following:
Collector and boundary elements in topping slabs placed over precast floor and
roof elements shall not be less than 3 inches (76 mm) or 6 db thick, where db is the
diameter of the largest reinforcement in the topping slab.
(h) Intermediate structural wall. Amend Section 1908.1.2 of the 2010
California Building Code to read as follows:
1908.1.2 ACI 318, Section 21.1.1. Modify ACI 318, Sections 21.1.1.3 and
21.1.1.7 as follows:
21.1.1.3 -Structures assigned to Seismic Design Category A shall satisfy
requirements of Chapters 1 to 19 and 22; Chapter 21 does not apply. Structures
assigned to Seismic Design Category B, C, D, E or F also shall satisfy 21.1.1.4 through
21.1.1.8, as applicable. Except for structural elements of plain concrete complying with
37
Section 1908.1.8 ofi the International Building Code, structural elements of plain
concrete are prohibited in structures assigned to Seismic Design Category C, D, E or F.
21.1.1.7 -Structural systems designated as part of the seismic-force-resisting
system shall be restricted to those permitted by ASCE 7. Except for Seismic Design
Category A, for which Chapter 21 does not apply, the following provisions shall be
satisfied for each structural system designated as part of the seismic-force-resisting
system, regardless of the Seismic Design Category:
(a) Ordinary moment frames shall satisfy 21.2.
(b) Ordinary reinforced concrete structural walls and ordinary precast
structural walls need not satisfy any provisions in Chapter 21.
(c) Intermediate moment frames shall satisfy 21.3.
(d) Intermediate precast structural walls shall satisfy 21.4.
(e) Special moment frames shall satisfy 21.5 through 21.8.
(f) Special structural walls shall satisfy 21.9.
(g) Special structural walls constructed using precast concrete shall satisfy
21.10.
All special moment frames and special structural walls shall also satisfy 21.1.3
through 21.1.7. Concrete tilt-up wall panels classified as intermediate precast structural
wall system shall satisfy 21.9 in addition to 21.4.2 and 21.4.3 for structures assigned to
Seismic Design Category D, E or F.
(i) Wall pier. Amend Section 1908.1.3 of the 2010 California Building Code
to read as follows:
1908.1.3 ACI 318, Section 21.4. Modify ACI 318, Section 21.4, by renumbering
Section 21.4.3 to become 21.4.4 and adding new Sections 21.4.3, 21.4.5, 21.4.6 and
38
21.4.7 to read as follows:
21.4.3 -Connections that are designed to yield shall be capable of maintaining
80 percent of their design strength at the deformation induced by the design
displacement or shall use Type 2 mechanical splices.
21.4.4 -Elements of the connection that are not designed to yield shall develop
at least 1.5 SY.
21.4.5 -Wall piers in Seismic Design Category D, E or F shall comply with
Section 1908.1.4 of this Code.
21.4.6 -Wall piers not designed as part of a moment frame in buildings assigned
to Seismic Design Category C shall have transverse reinforcement designed to resist
the shear forces determined from 21.3.3. Spacing of transverse reinforcement shall not
exceed 8 inches (203 mm). Transverse reinforcement shall be extended beyond the
pier clear height for at least 12 inches (305 mm).
Exceptions:
1. Wall piers that satisfy 21.13.
2. Wall piers along a wall line within a story where other-shear wall segments
provide lateral support to the wall piers and such segments have a total
stiffness of at least six times the sum of the stiffnesses of all the wall piers.
21.4.7 -Wall segments with a horizontal length-to-thickness ratio less than 2.5
shall be designed as columns.
Q) Minimum reinforcement. Amend Section_ 1908.1.8 of the 2010 California
Building Code to read as follows:
1908.1.8 ACI 318, Section 22.10. Delete ACI 318, Section 22.10, and .replace
with the following:
39
22.10 -Plain concrete in structures assigned to Seismic. Design Category C, D,
EorF.
22.10.1 -Structures assigned to Seismic Design Category C, D, E or F shall not
have elements of structural plain concrete, except as follows:
(a) Concrete used for fill shall comply with the requirement of Section 1909 of
the California Building Code.
(b) Isolated footings of plain concrete supporting pedestals or columns are
permitted, provided the projection of the footing beyond the face of the supported
member does not exceed the footing thickness.
(c) Plain concrete footings supporting walls are permitted provided the
footings have at least two continuous longitudinal reinforcing bars. Bars shall not be
smaller than No. 4 and shall have a total area of not less than 0.002 times the gross
cross-sectional area of the footing. A minimum of one bar shall be provided at the top
and bottom of the footing. Continuity of reinforcement shall be provided at corners and
intersections.
In detached one- and two-family dwellings three stories or less in height and
constructed with stud-bearing walls, plain concrete footings with at least two continuous
longitudinal reinforcing bars not smaller than No. 4 are permitted to have a total area of
less than 0.002 times the gross cross-sectional area of the footing.
SECTION 11. Section 8.16.060 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.16.060 Steel construction.
(a) Special Concentrically Braced Frames (SCBF). Modify AISC 341 Part I,
40
Section 13.2 by adding the following:
13.2f. Member Types. The use of rectangular HSS are not permitted for bracing
members, unless filled solid with cement grout having a minimum compressive strength
of two thousand five hundred psi at twenty-eight days. The effects of composite action
in the filled composite brace shall be considered in the sectional properties of the
system where it results in the more severe loading condition or detailing.
(b) Consumables for welding. Add Section 2204.1.1 to Chapter 22 of the 2010
California Building Code to read as follows:
2204.1.1 Consumables for welding.
2204.1.1.1 Seismic Force Resisting System (SERB) welds. All welds used in
members and connections in the SFRS shall be made with filler metals meeting the
requirements specified in AWS D1.8 Clause 6.3. AWS D1.8 Clauses 6.3.5, 6.3.6, 6.3.7
and 6.3.8 shall apply only to demand critical welds.
2204.1.1.2 Demand critical welds. Where welds are designated as demand
critical, they shall be made with filler metals meeting the requirements specified in AWS
D1.8 Clause 6.3.
SECTION 12. Section 8..16.070 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.16.070 Wood construction.
(a) General fastener requirement. Amend Section 2304.9.1 and Table
2304.9.1 of the 2010 California Building Code to read as follows:
2304.9.1 General fastener requirements. Connections for wood members shall
41
be designed in accordance with the appropriate methodology in Section 2301.2. The
number and size of fasteners connecting wood members shall not be less than that set
forth in Table 2304.9.1. Staple fasteners in Table 2304.9.1 shall not be used to resist or
transfer seismic forces in structures assigned to Seismic Design Category D, E or F.
(b) Retaining Walls. Section 2304.11.7 of the California Building Code is
deleted in its entirety.
(c) Hold-down Connectors.
2305.5 Hold-down connectors. In Seismic Design Category D, E or F, hold-down
connectors shall be designed to resist shear wall overturning moments using approved
cyclic load values or 75 percent of the allowable seismic load values that do not
consider cyclic loading of the product. Connector bolts into wood framing shall require
steel plate washers on the post on the opposite side of the anchorage device. Plate size
shall be a minimum of 0.229 inch by 3 inches by 3 inches (5.82 mm by 76 mm by 76
mm) in size. Hold-down connectors shall be tightened to finger tight plus one half (1/2)
wrench turn just prior to covering the wall framing.
(d) Shear Walls and Diaphragms.
(1) Plaster and Gypsum Shear Walls. Shear capacities for walls sheathed
with lath, plaster or gypsum board shall be in accordance with Table 2306.4.5 and shear
walls sheathed with lath, plaster or gypsum board shall be constructed in accordance
with Section 2306.4.5.1 of the building code. Walls resisting seismic loads shall be
subject to the limitations in Section 12.2.1 of ASCE 7. The allowable shear values
shown in Table 2306.4.5 for materials in category 1 are limited to ninety pounds per foot
(1.31 kN/m); material in category 2 through 4 are limited to thirty pounds per foot (438
N/m).
42
(2) Shear Wall Capacity. Modify Section 2306.4.1 of the California Building
Code as follows:
2306.4.1. Wood Structural Panel Shear Walls. The allowable shear capacities
for wood structural panel shear walls shall be in accordance with Table 2306.4.1. These
capacities are permitted to be increased forty percent for wind design. No increase for
sixteen inch on center stud spacing shall be allowed as indicated in Footnote d of Table
2306.4.1.
For shear walls constructed with wood structural panels of three-ply construction,
the maximum allowable shear shall be limited to two hundred pounds per foot: No value
shall be given for wood structural sheathing applied over gypsum or plaster sheathing.
(3) Construction. Section 2305.3.3 of the California Building Code is
modified as follows:
2305.3.3 Construction. Wood shearwalls shall be constructed of wood structural
panels manufactured with exterior glue and not less than four feet by eight feet (1,219
mm by 2,438 mm), except at boundaries and at changes in framing. All edges of all
panels shall be supported by and fastened to framing members or blocking. Wood
structural panel thickness for shear walls shall not be less than three eighths inch thick
and studs shall not be spaced at more than sixteen inches on center.
(4) Fasteners. Fasteners for wood structural panel sheathing- on shear walls
and diaphragms shall be common nails with full heads unless otherwise approved.
Mechanically driven common nails may be used when the fastener meets the same
tolerances for head, shank and length allowed ih ASTM 1667 for hand-driven nails.
Staple fasteners shall not be used.
Nails shall be placed a minimum of one-half inch from the panel edges and a
43
minimum of one-half inch from the edge of the connecting members for shear greater
than three hundred pounds per foot.
(5) Limits on Rotation of Diaphragms. Except as permitted below, lumber
and wood structural panel diaphragms shall not be considered as transmitting lateral
forces by rotation.
Transfer of lateral forces by rotation will be permitted for one-story, detached
residential garages or similar Group U, Division 1 wood-framed structures with a
maximum depth normal to the open side of twenty-five feet and a maximum width of
twenty-five feet provided the diaphragm is not constructed of straight sheathing.
(e) Conventional Light Frame Construction.
(1) Number of stories. Modify Section 2308 of the California Building Code
as follows:
2308.12.1 Number of stories. Structures of conventional -light-frame
construction shall not exceed one story in height in Seismic Design Category D or E.
(2) Braced Wall Line Support. Modify Section 2308.3.4 of the California
Building Code as follows:
2308.3.4 Braced wall line support. Braced wall lines shall be supported by
continuous foundations.
(3) Braced Wall Line Sheathing. Modify Footnotes b and c of Table
2308.12.4 of the California Building Code as follows:
(b) G-P =gypsum board, lath and plaster or gypsum sheathing boards attached
to studs at maximum sixteen inches on center; S-W =wood structural panels of
minimum 15/32 inch thickness attached to studs at maximum sixteen inches on center.
(c) .Nailing as specified below shall occur at all panel edges at studs, at top
44
and bottom plates and, where occurring, at blocking:
For one-half-inch gypsum board, 5d (0.113 inch diameter) cooler nails at seven inches
on center,
For 5/8-inch gypsum board, No. 11 gage (0.120 inch diameter) at seven inches on
center,
For gypsum sheathing board, one and three-quarter inches long by 7/16-inch head,
diamond point galvanized nails at four inches on center;
For gypsum lath, No. 13 gage (0.092 inch) by one and one-eighth inches long, 19/64-
inch head, plasterboard at five inches on center;
For Portland cement plaster, No. 11 gage (0.120 inch) by one and one-half inches long,
7/16-inch head at six inches on center;
For S-W sheathing shall be nailed with 10d common nails, at 6:6:12.
(4) Braced Wall Line Attachment. Modify Section 2308.12.5 of the California
Building Code as follows:
2308.12.5 Attachment of sheathing. Fastening of braced wall panel sheathing .
shall not be less than that prescribed in Table 2308.12.4 or 2304.9.1. Wall sheathing
shall not be attached to framing members by adhesives.
All braced wall panels shall extend to the roof sheathing and shall be attached to
parallel roof rafters or blocking above with framing clips (18 gauge minimum) spaced at
maximum twenty-four inches (6,096 mm) on center with four 8d common nails per leg
(total eight 8d common nails per clip). Braced wall panels shall be laterally braced at
each top corner and at maximum twenty-four inch (6,096 mm) intervals along the top
plate of discontinuous vertical framing.
(f) Wood used in retaining wall. Amend Section 2304.11.7 of the 2010
45
California Building Code to read as follows:
2304.11.7 Wood used in retaining walls and cribs. Wood installed in retaining
or crib walls shall be preservative treated in accordance with AWPA U1 (Commodity
Specifications A or F) for soil and fresh water use. Wood shall not be used in retaining
or crib walls for structures assigned to Seismic Design Category D, E or F.
(g) Quality of nails. Add Section 2305.4 to Chapter 23 of the 2010 California
Building Code to read as follows:
2305.4 Quality of Nails. In Seismic Design Category D, E or F, mechanically
driven nails used in wood structural panel shear walls shall meet the same dimensions
as that required for hand-driven nails, including diameter, minimum length and minimum
head diameter. Clipped head or box nails are not permitted in new construction. The
allowable design value for clipped head nails in existing construction may be taken at no
more than the nail-head-area ratio of that of the same size hand-driven nails.
(h) Wood diaphragms. Add Tables 2306.2.1(3) and 2306.2.1(4) to Chapter 23
of the 2010 California Building Code and amend Section 2306.2.1 of the 2010 California
Building Code to read as follows:
2306.2.1 Wood structural panel diaphragms. Wood structural panel
diaphragms shall be designed and constructed in accordance with AF&PA SDPWS.
Wood structural panel diaphragms are permitted to resist horizontal forces using the
allowable shear capacities set forth in Table 2306.2.1(1) or 2306.2.1(2). For structures
assigned to Seismic Design Category D, E or F, the allowable shear capacities shall be
set forth in Table 2306.2.1(3) or 2306.2:1(4). The allowable shear capacities in Table
2306.2.1.(1) or-2306.2.1(2) are permitted to be increased 40 percent for wind design.
Wood structural panel diaphragms fastened with staples shall not used to resist seismic
46
forces in structures assigned to Seismic Design Category D, E or F.
Exception: Staples may be used for wood structural panel diaphragms when the
allowable shear values are substantiated by cyclic testing and approved by the building
official.
Wood structural panel diaphragms used to resist seismic forces in structures assigned
to Seismic Design Category D, E or F shall be applied directly to the framing members.
Exception: Wood structural panel diaphragm is permitted to be fastened over
solid lumber planking or laminated decking, provided the panel joints and lumber
planking or laminated decking joints do not coincide.
TABLE 2306.2.1(3)
ALLOWABLE SHEAR (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL
DIAPHRAGMS WITH FRAMING OF DOUGLAS FIR-LARCH OR SOUTHERN PINEa
FOR SEISMIC LOADINGf
47
FOR STRUCTURES ASSIGNED TO SEISMIC DESIGN CATEGORY D, E OR F
PA#EL
GRADE C9tON
NAiL t~N36k}9t,
FASYENER R9NIG9UR4
41t)!u'iNA iJiNt '~iU S
Naua3#sL pCKED DIAPNRA66A5 UNBL4CKE@DWFHRA S
9t2E 3'E#ETRATIGN PANEI LY367H OF Pasrener suacirw tisxhas}atdiaohraom
IN FRAMING ?NFCtCNESS FRAGflNG hosnrlaNas fail casas}af cn~nuous narcl
H~xl3es} ittmfi MEMBERS A4
A0.lC71N}NG ed~s oaralFel M ia~d
/Caaes33. aMal ati rte7e es Cases 8.6
Fasiexters aced 6"max. ax su rted
FANEL d 2us 2
~ ~`' ~
E{1I3ES AtH# {Na uabloake9 xlaes ar
3 All nSteiconfialratim5
$f3LiN6ARtE a? Fasfenerspaaing{33c h55}a2aiRar paneladycs c»nhnuoes w~sp
raiicl?n gCaaas 2, 3. 3.5 ami $5
l^ches s es A_2.%a ubd
6 8 3 3
Sc 2 Fx 3r3
~ 3_3 c^ TD ~ S='D 5~J 24D tab
SS~u3""5" p.}3t" i - 3 3D9 td,^, 53D ~ 253 2DD
G:sd=_s ' 3D~''r3"s
` 3 }2 15!32 2 92b -23 3Ab L 338 235
b..t~S
= _ 3£~D 48~ "39 S2A 2Rb
Tv3 CCx a trx
' _ }D5 25 335 .2D tfi5 t26
D.3~13 ii -
--
3`S 3 21rJ 2$G -2S iF5 1$fr ;1,~,
$d i275`X 2 ~ ~ egb ~ 333 t69
-at~~ ia b t34^. 3 2=,9 35II 3#D fit`J ~ t$~9
f''~ssn5 &d !2 s"x ~~$ 3„3fi 2 ?"S5 'aCD 5_ b_5 ::3 t=~R
oah-r. ?_t~ 3_ 2ga 332. 3hfi 5E5 235 t8B
^reY^~a_3 3d2 r'x
' t 3+3 's 2r5 $58 83D 3~D 2~D t8D
aRrs•SdM b,t 3t
i
t 3 35b u~3 b5 3~` 23D
d?52
a: iD3°t3'R ~~` 2 2921 3~ 5_5 593 255 t5'J
, '3.34£5 1~ 3 ~5 s3jt tx6B 738 <93 i,iA
tbd' s'x 7?L 5932 2 ~ 4-=S 'x?b '?Si 2t5
~.tS8: ~ 35S g~ Z28 ~ 32D 2t9
ALLOWABLE SHEAR (POUNDS-PER FOOT) FOR WOOD STRUCTURAL
PANEL DIAPHRAGMS WITH FRAMING OF DOUGLAS FIR-LARCH,
OR SOUTHERN PINEa FOR SEISMIC LOADINGf
FOR STRUCTURES ASSIGNED TO SEISMIC DESIGN CATERGORY D, E OR F
~~ } 1 o- /q
G~, y. {~ i
s.n amsxm.~ y.t°.z
^~ y [
-- ~...F3..'~
~_ z
4~v~~~ 2 fF CAS£ ~ ~ A.~E '{
g@?f
__
i~l .~
Gt3.$E6 i if .5__:t
-.y c. v.s d.-~ ~t .. Jv.tti I G
,`.0.5nt:..a
For SI: 1inch = 25.4 mm, 1 pound per foot = 14.5939 N/m.
48
a. For framing of other species: (1) Find specific gravity for species of lumber in AF&PA
NDS. (2) For nails find shear value from table above for nail size for actual grade
and multiply value by the following adjustment factor: Specific Gravity Adjustment
Factor = [1-(0.5-SG)], where SG =Specific Gravity of the framing lumber. This
adjustment factor shall not be greater than 1.
b. Space fasteners maximum 12 inches o.c. along intermediate framing members (6
inches o.c. where supports are spaced 48 inches o.c.).
c. Framing at adjoining panel edges shall be 3 inches nominal or thicker, and nails at
all. panel edges .shall be staggered where panel edge nailing is specified at 2 '/2
inches o.c. or less.
d. Framing at adjoining panel edges shall be 3 inches nominal or thicker, and nails at
all panel edges shall be staggered where both of the following conditions are met:
(1) 10d nails having penetration into framing of more than 1 '/2 inches and (2) panel
edge nailing is specified at 3 inches o.c. or less.
e. The minimum nominal width of framing members not located at boundaries or
adjoining panel edges shall be 2 inches.
f. For shear loads of normal or permanent load duration as defined by the AF&PA
NDS, the values in the table above shall be multiplied by 0.63 or 0.56, respectively.
49
TABLE 2306.2.1(4)
ALLOWABLE SHEAR (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL
BLOCKED DIAPHRAGMS UTILIZING MULTIPLE ROWS OF FASTENERS (HIGH
LOAD DIAPHRAGMS) WITH FRAMING OF DOUGLAS FIR-LARCH OR SOUTHERN
PINEa FOR SEISMIC LOADINGb,e,9
FOR STRUCTURES ASSIGNED TO SEISMIC DESIGN CATERGORY D, E OR F
~LOCKELi atkPtIRAGMs
MtNIMGM 9AfNiMt3M MINIMUM N4M)NAE alas 1 atM 2 -
PANEL CGMMC3N FASTENER N6MWAL t"AtSTH t)F FRAMING t:a$~nyr Snacirw Per Line at 6avrn#aries iittch
}
PENEYRATK#d PkNEL i44EMB£RS AT A-J6INING EiNES OF es
~,,~, Nkit ~SZE
IN FRAM3NG
3NECKNESS
PkNEL E[3GE8 kND FASTENERS
9
2 7d2
inche Inch cinches FasteneF Bi~cir~t PS}'Lin e aiGther Panei Etk3es
i~he s
~_ k _
3 _ 665 635 _ 9.150
95i3. 4 2_ 7 1 1_fl05 1190
d 5 1"220 1.2$ 9.395
Sfruchvai l ~ 3 ~ 6 860 ~ 9255
trades 1112 99732 _ 2 7811 1.330 9dd
nails 4 3 3 3 44 7.4ti5
3 $ 730 955 1.D5 Y.365
2332 d 2 $?3 10 121D
d 3 1.[15Q 9 d 0 1.5 5
3 2 5 825 765 _1D
Stl9athtn6. 15132 Q 631a _ 1.1U
sinclafiaor _ 3 ~ 9.085 1.330 3.185
antl c01er ~ 3 2 a"0 660 935 1.225
re a6es cornmcan X1,°2 19=32 ~ 2 75 965 1.US0 1.376
coV-ered in al ~ 3 935 ~,? 3. 85 1 d
G4C PSi and _ ~ _ 3 1.D20 1
23?32 d _ 835 1 U50 1 a 1.LdT~
3 1.020 .4 9:A631 3.
For SI: 1 inch = 25.4 mm, 1 pound per foot = 14.5939 N/m.
a. For framing of other species: (1) Find specific gravity for species of lumber in AF&PA
NDS. (2) For nails find shear value from table above for nail size for actual grade
and multiply value by the following adjustment factor: Specific Gravity Adjustment
Factor = [1-(0.5-SG)], where SG =Specific Gravity of the framing lumber. This
adjustment factor shall not be greater than 1.
b: Fastening along intermediate framing members: Space fasteners a maximum of 12
inches on center, except 6 inches on center for spans greater than 32 inches.
50
c. Panels conforming to PS1 or PS 2.
d. This table gives shear values for Cases 1 and 2 as shown in Table 2306.2.1(3). The
values shown are applicable to Cases 3, 4, 5 and 6 as shown in Table 2306.2.1(3),
providing fasteners at all continuous panels edges are spaced in accordance with
the boundary fastener spacing.
e. The minimum nominal depth of framing members shall be 3 inches nominal. The
minimum nominal width of framing members not located at boundaries or adjoining
panel edges shall be 2 inches.
f. High load diaphragms shall be subject to special inspection in accordance with
Section 1704.6.1.
g. For shear loads of normal or permanent load duration as defined by the AF&PA
NDS, the values in the table above shall be multiplied by 0.63 or 0.56, respectively.
51
TABLE 2306.2.1(4)-continued
ALLOWABLE SHEAR (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL
BLOCKED DIAPHRAGMS UTILIZING MULTIPLE ROWS OF FASTENERS (HIGH
LOAD DIAPHRAGMS) WITH FRAMING OF DOUGLAS FIR-LARCH OR SOUTHERN
PINEa FOR SEISMIC LOADINGb,r,9
FOR STRUCTURES ASSIGNED TO SEISMIC DESIGN CATERGORY D, E OR F
__ ~
ir° ~ ~
4.. ~.
..w ~~ ~:
__ _ --- .
.,
,,...
--
i
~` M.vn L._.: .:Pits
-ray ~. ~~- ~~- r~ , _
~ _ *... s
'$} ~ ~..~
~^~C. j ~ a
y
v' ~ } .. Y7
~-tdGr~<<azi-iMg;r~-; ~,~z<
~"~
3 aaT _ ~.:. ~ ~ __ ~ _....
t '; c
I ~ .i ~ y
Tf?SL'x*.i is ".:;?Pd-„^J3* kk'T';titt~C=
'~. y sn 3j v~*.'.339s ILl
aaPZa =a~~
52
(i) Wood shear walls. Add Table 2306.3(2) to Chapter 23 of the 2010
California Building Code and amend Section 2306.3 and Table 2306.3 of the 2010
California Building Code to read as follows:
2306.3 Wood structural panel shear walls. Wood structural panel shear walls
shall be designed and constructed in accordance with AF&PA SDPWS. Wood structural
panel shear walls are permitted to resist horizontal forces using the allowable shear
capacities set forth in Table 2306.3(1). For structures assigned to Seismic Design
Category D, E or F, the allowable shear capacities shall be set forth in Table 2306.3(2).
The allowable shear capacities in Table 2306.3(1) are permitted to be increased 40
percent for wind design.
Wood structural panel shear walls used to resist seismic forces in structures assigned to
Seismic Design Category D, E or F shall .not be less than 4 feet by 8 feet (1219 mm by
2438 mm), except at boundaries and at changes in framing. Wood structural panel
thickness for shear walls shall not be less than 3/8 inch thick and studs shall not be
spaced at more than 16 inches on center.
The maximum allowable shear value for three-ply plywood resisting seismic forces in
structures assigned to Seismic Design Category D, E or F is 200 pounds per foot (2.92
kn/m). Nails shall be placed not less than 1/2 inch (12.7 mm) in from the panel edges
and not less than 3/8 inch (9.5mm) from the edge of the connecting members for shear
greater than 350 pounds per foot (5.11kN/m). Nails shall be placed not less than 3/8
inch (9.5 mm) from panel edges and not less than 1/4 inch (6.4 mm) from the edge of
the connecting members for shears of 350 pounds per foot (5.11 kN/m) or less.
Wood structural panel shear walls used to resist seismic forces in structures assigned to
Seismic Design Category D, E or F shall be applied directly to the framing members.
53
TABLE 2306.3(1)
ALLOWABLE SHEAR (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL
SHEAR WALLS WITH FRAMING OF DOUGLAS FIR-LARCH OR SOUTHERN PINEa
FOR WIND OR SEISMIC LOADINGb, n, ~,], ~, m, n
TABLE 2306.3(2)
ALLOWABLE SHEAR (POUNDS PER FOOT) FOR WOOD STRUCTURAL PANEL
SHEAR WALLS WITH FRAMING OF DOUGLAS FIR-LARCH OR SOUTHERN PINEa
FOR SEISMIC LOADINGn, n' ~' k, i
FOR STRUCTURES ASSIGNED TO SEISMIC DESIGN CATEGORY D, E OR F
t~7NI U A+i3NEMkt PANELS APPLIEp fl
PANEL GRApE N~M(NAL P,ONEL ' FASTENER
TH1GKPtESS finch) EN ~TR T[ tN CI}~?l?tk~N NAIL. SCZE
FRAP~#NG Cnchesl
6 d ~ 3 ~ 2~
Etrttcturat l 775..
sh2athi~ta '35133
378° ) 1 3i8 ~ 8r3 t2'/'k~3.1`33"b ~ 15D ~ 2~0 (?~fl 120D J
For SI: 1 inch = 25.4 mm, 1 foot = 25.4 mm, 1 pound per foot = 14.5939 N/m.
a. For framing of other species: (1) Find specific gravity for species of lumber in AF&PA
NDS. (2) For nails find shear value from table above for nail size for actual grade
and multiply value by the following adjustment factor: Specific Gravity Adjustment
Factor = [1-(0.5-SG)), where SG =Specific Gravity of the framing lumber. This
adjustment factor shall not be greater than 1.
54
b. Panel edges backed with 2-inch nominal or thicker framing. Install panels either
horizontally or vertically. Space fasteners maximum 6 inches on center along
intermediate framing members for 3/8-inch and 7/16-inch panels installed on studs
spaced 24 inches on center. For other conditions and panel thickness, space
fasteners maximum 12 inches on center on intermediate supports.
a 3/8-inch panel thickness or siding with a span rating of 16 inches on center is the
minimum recommended where applied direct to framing as exterior siding. For
grooved panel siding, the nominal panel thickness is the thickness of the panel
measured at the point of nailing.
d. Allowable shear values are permitted to be increased to values shown for 15/32-inch
sheathing with same nailing provided (a) studs are spaced a maximum of 16 inches
on center, or (b) panels are applied with long dimension across studs.
e. Framing at adjoining panel edges shall be 3 inches nominal or thicker, and nails
shall be staggered where nails are spaced 2 inches on center or less.
f. Framing at adjoining panel edges shall be 3 inches nominal or thicker, and nails
shall be staggered where both of the following conditions are met: (1) 10d
(3"x0.148") nails having penetration into framing of more than 1-1/2 inches and (2)
nails are spaced 3 inches on center or less.
g. Values apply to all-veneer plywood. Thickness at point of fastening on panel edges
governs shear values.
55
h. Where panels applied on both faces of a wall and nail spacing is less than 6 inches
o.c. on either side, panel joints shall be offset to fall on different framing members.
Or framing shall be 3-inch nominal or thicker at adjoining panel edges and nails at all
panel edges shall be staggered.
i. Where shear design values exceed 350 pounds per linear foot, all framing members
receiving edge nailing from abutting panels shall not be less than a single 3-inch
nominal member, or two 2-inch nominal members fastened together in accordance
with Section 2306.1 to transfer the design shear value between framing members.
Wood structural panel joint and sill plate. nailing shall be staggered at all panel
edges. See Section 4.3.6.1 and 4.3.6.4.3 of AF&PA SDPWS for sill plate size and
anchorage requirements.
j. Galvanized nails shall be hot dipped or tumbled.
k. For shear loads of normal or permanent load duration as defined by the AF&PA
NDS, the values in the table above shall be multiplied by 0.63 or 0.56, respectively.
I. The maximum allowable shear value for three-ply plywood resisting seismic forces is
200 pounds per foot (2.92 kn/m).
Q) Other shear walls. Amend Section 2306.7 of the 2010 California Building
Code to read as follows:
2306.7 Shear walls sheathed with other materials. Shear walls sheathed with
portland cement plaster, gypsum lath, gypsum sheathing or gypsum board shall be
designed and constructed in accordance with AF&PA SDPWS. Shear walls sheathed
56
with these materials are permitted to resist horizontal forces using the allowable shear
capacities set forth in Table 2306.7. Shear walls sheathed with portland cement plaster,
gypsum lath, gypsum sheathing or gypsum board shall not be used to resist seismic
forces in structures assigned to Seismic Design Category E or F.
Shear walls sheathed with lath, plaster or gypsum board shall not be used below the top
level in a multi-level building for structures assigned to Seismic Design Category D.
(k) Brace wall line support. Amend Section 2308.3.4 of Chapter 23 of the 2010
California Building Code to read as follows:
2308.3.4 Braced wall line support. Braced wall lines shall be supported by
continuous foundations.
Exception: For structures with a maximum plan dimension not over 50 feet
(15240 mm), continuous foundations are required at exterior walls only for structures
not assigned to Seismic Design Category D, E or F.
(I) Concrete or masonry. Amend Section 2308.12.2 of Chapter 23 of the 2010
California Building Code to read as follows:
2308.12.2 Concrete or masonry. Concrete or masonry walls and stone or
masonry veneer shall not extend above the basement.
Exception: Stone and masonry veneer is permitted to be used in the first story above
grade plane in Seismic Design Category D, provided the following criteria are met:
57
1. Type of brace in accordance with Section 2308.9.3 shall be Method 3 and the
allowable shear capacity in accordance with Table 2306.4.1 shall be a minimum of 350
plf (5108 N/m).
2. The bracing of the first story shall be located at each end and at least every
25 feet (7620 mm) o.c. but not less than 45 percent of the braced wall line.
3. Hold-down connectors shall be provided at the ends of braced walls for the
first floor to foundation with an allowable design of 2,100 pounds (9341 N).
4. Cripple walls shall not be permitted.
5. Anchored masonry and stone wall veneer shall not exceed 5 inches (127 mm)
in thickness, shall conform to the requirements of Chapter 14 and shall not extend more
than 5 feet (1524 mm) above the first story finished floor. The height extending above
the first story finished floor may be greater than 5 feet (1524mm) provided it is designed
by a registered design professional and approved by the Building Officer.
(m) Braced wall sheathing. Amend Section 2308.12.4 and Table 2308.12.4 of
the 2010 California Building Code to read as follows:
2308.12.4 Braced wall line sheathing. Braced wall lines shall be braced by one
of the types of sheathing prescribed by Table 2308.12.4 as shown in Figure 2308.9.3.
The sum of lengths of braced wall panels at each braced wall line shall conform to
Table 2308.12.4. Braced wall panels shall be distributed along the length of the braced
wall line and start at not more than 8 feet (2438 mm) from each end of the braced wall
line. Panel sheathing joints shall occur over studs or blocking. Sheathing shall be
ss
fastened to studs, top and bottom plates and at panel edges occurring over blocking.
Wall framing to which sheathing used for bracing is applied shall be nominal 2 inch wide
[actual 1'/2 inch (38 mm)] or larger members and spaced a maximum of 16 inches on
center.
Exception: Braced wall panels required by Section 2308.12.4 may be eliminated when
all of the following requirements are met:
1. One story detached Group U occupancies not more than 25 feet in depth
or length.
2. The roof and three enclosing walls are solid sheathed with 15/32 inch
nominal thickness wood structural panels with 8d common nails placed 3/8 inches from
panel edges and spaced not more than 6 inches on center along all panel edges and 12
inches on center along intermediate framing members. Wall openings for doors or
windows are permitted provided a minimum 4 foot wide wood structural braced panel
with minimum height to length ratio of 2 to 1 is provided at each end of the wall line and
that the wall line be sheathed for 50% of its length.
Wood structural panel sheathing shall be a minimum of 15/32 inch thick nailed with 8d
common placed 3/8 inches from panel edges and spaced not more than 6 inches on
center and 12 inches on center along intermediate framing members.
Braced wall panel construction types shall not be mixed within a braced wall line.
59
TABLE 2308.12.4
WALL BRACING IN SEISMIC DESIGN CATEGORIES D AND E
(Minimum Length of Wall Bracing per each 25 Linear Feet of Braced Wall Linea)
SHEATHING 0.75 < So s <
CONDITION TYPEb Sos < 0.50 0.50 <_Sos < 0.75 1.00 S os > 1.00
G-P` 10 feet 8 inches 14 feet 8 inches 18 feet 8 inches 25 feet 0 inches
One Story
S- 5 feet 4 inches 8 feet 0 inches 9 feet 4 inches 12 feet 0 inches
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
a. Minimum length of panel bracing of one face of the wall for S-W sheathing shall be
at least 4'-0" long or both faces of the wall for G-P sheathing shall be at least 8'-0"
long; h/w ratio shall not exceed 2:1. For S-W panel bracing of the same material on
two faces of the wall, the minimum length is permitted to be one-half the tabulated
value but the h/w ratio shall not exceed 2:1 and design for uplift is required.
b. G-P =gypsum board, portland cement plaster or gypsum sheathing boards; S-W =
wood structural panels.
c. Nailing as specified below shall occur at all panel edges at studs, at top and bottom
plates and, where occurring, at blocking:
For 1/2-inch gypsum board, 5d (0.113 inch diameter) cooler nails at 7 inches on
center;
For 5/8-inch gypsum board, No 11 gage (0.120 inch diameter) cooler nails at 7
inches on center;
60
For gypsum sheathing board, 1-3/4 inches long by 7/16-inch head, diamond point
galvanized nails at 4 inches on center;
For gypsum lath, No. 13 gage (0.092 inch) by 1-1/8 inches long, 19/64-inch head,
plasterboard at 5 inches on center;
For Portland cement plaster, No. 11 gage (0.120 inch) by 1'/2 inches long,'/~6- inch
head at 6 inches on center;
d. S-W sheathing shall be a minimum of 15/32" thick nailed with 8d common placed
3/8 inches from panel edges and spaced not more than 6 inches on center and 12
inches on center along intermediate framing members.
(n) Attachment of sheathing. Amend Section 2308.12.5 of the 2010 California
Building Code to read as follows:
2308.12.5 Attachment of sheathing. Fastening of braced wall panel sheathing
shall not be less than that prescribed in Table 2308.12.4 or 2304.9.1. Wall sheathing
shall not be attached to framing members by adhesives. Staple fasteners in Table
2304.9.1 shall not be used to resist or transfer seismic forces in structures assigned to
Seismic Design Category D, E or F.
All braced wall panels shall extend to the roof sheathing and shall be attached to
parallel roof rafters or blocking above with framing clips (18 gauge minimum) spaced at
maximum 24 inches (6096 mm) on center with four 8d nails per leg (total eight 8d nails
per clip). Braced wall panels shall be laterally braced. at each top corner and at
maximum 24 inch (6096 mm) intervals along the top plate of discontinuous vertical
61
framing.
SECTION 13. Chapter 8.22 is hereby added to the Santa Monica Municipal Code
to read as follows:
Chapter 8.22 Residential Code.
8.22.010 Adoption.
That certain document entitled "California Residential Code 2010 Edition, which
adopts by reference the International Residential Code, 2009 Edition, as published by
the California Building Standards Commission and the International Code Council
(excluding Sections R102 through R114, R313), including Chapter 1, Division I, Section
R101, are hereby adopted with local amendments and provisions of this Chapter of the
Santa Monica Municipal Code, as the Residential Code of the City of Santa Monica.
8.22.020 Local amendments to the California Residential Code.
Notwithstanding any provisions of the California Residential Code, California
Building Standards Code, State Housing Law or other codes adopted by any Chapter in
Article VIII of the Municipal Code to the contrary, the following local amendments shall
apply.
6z
8..22.030 General residential structural provisions.
(a) Woodframe structures. Amend Section R301.1.3.2 of the 2010 California
Residential Code to read as follows:
R301.1.3.2 _Woodframe structures. The building official shall require
construction documents to be approved and stamped by a California licensed architect
or engineer for all dwellings of woodframe construction more than two stories and
basement in height located in Seismic Design Category A, B or C. Notwithstanding
other sections the law, the law establishing these provisions is found in Business and
Professions Code Section 5537 and 6737.1.
The building official shall require construction documents to be approved and
stamped by a California licensed architect or engineer for all dwellings of woodframe
construction more than one story in height located in Seismic Design Category Do, D~,
Dz or E.
(b) Slopes steeper than 33-1/3 percent. Add Section R301.1.4 to the 2010
California Residential Code to read as follows:
R301.1.4 Seismic Design Provisions for Buildings Constructed On Or Into
Slopes. Steeper Than One Unit Vertical In Three Units Horizontal (33.3 Percent
Slope).
The design and construction of new buildings and additions to existing buildings
when constructed on or into slopes steeper than one unit vertical in three units
horizontal (33.3 percent slope) shall comply with Section 1613 of the 2010 California
63
Building Code.
(c) Irregular buildings. Amend Section R301.2.2.2.5 to the 2010 California
Residential Code to read as follows:
R301.2.2.2.5 1. When exterior shear wall lines or braced wall panels are not in
one plane vertically from the foundation to the uppermost story in which they are
required.
2. When a section of floor or roof is not laterally supported by shear walls or
braced wall lines on all edges.
3. When the end of a braced wall panel occurs over an opening in the wall
below.
4. When an opening in a floor or roof exceeds the lesser of 12 feet (3658 mm) or
50 percent of the least floor or roof dimension.
5. When portions of a floor level are vertically offset.
6. When shear walls and braced wall lines do not occur in two perpendicular
directions.
7. When stories above-grade partially or completely braced by wood wall
framing in accordance with Section R602 or steel wall framing in accordance with
Section R603 include masonry or concrete construction.
(d) Application. Amend Section R501.1 of the 2010 California Residential-Code
to read as follows:
R501.1 Application. The provision of this chapter shall control the design and
64
construction of the floors for all buildings including the floors of attic spaces used to
house mechanical or plumbing. fixtures and equipment weighing less than 400 Ibs and
maximum height of 4 feet above the floor or attic level.
(e) Openings in horizontal diaphragms. Add Section R503.2.4 to Chapter 5
of the 2010 California Residential Code to read as follows:
R503.2.4 Openings in horizontal diaphragms. Openings in horizontal
diaphragms with a dimension perpendicular to the joist that is greater than 4 feet (1.2 m)
shall be constructed in accordance with Figure R503.2.4.
F? VtvDQD SHEATH#N~3
DiRaHRAuM DaEM1i1NG
u i~ ~
'//. / .'
hAETAL ilE 76pA.xiir~nd'-(+' AiIN., {iTOTfL)
Vilz5-15tl CUtrihR~F1 MAILSAS SHf3WN
,Dp-.
lRETALT9E ifi^sA. x 7 1,^1" xiOPEtt1NG WID~i+4'-0") MF~I.,
(2 TOTFl7 Wl2d~16G COM3h[JN NAfLS
fiaF SI: 1 arch ='!5.{ mm, t far'! ~ 341.& nm.
a. Blockings shall be provided beyond headers.
65
b. Metal ties not less than 0.058 inch [1.47 mm (16 galvanized gage)] by 1.5 inches (38
mm) wide with eight 16d common nails on each. side of the header-joist intersection.
The metal ties shall have a minimum yield of 33,000 psi (227 MPa).
c. Openings in diaphragms shall be further limited in accordance with Section
R301.2.2.2.5.
Figure R503.2.4
66
(f) Bracing requirement. Amend Table R602.10.1.2(2) of the 2010 California
Residential Code to read as follows:
TABLE R602.10.1.2(2)a,h,c
BRACING REQUIREMENTS BASED ON SEISMIC DESIGN CATEGORY
(AS A FUNCTION OF BRACED WALL LINE LENGTH)
SOIL CLASS Da
WALL HEIGHT = 10 FT
10 PSF FLOOR DEAD LOAD
15 PSF ROOF/CEILING DEAD LOAD
BRACED WALL LINE SPACING < 26FT
INIMUM TOTAL LENGTH (feet) OF BRACED WALL PANELS REQUIRED
ALONG EACH BRACED WALL LINE
Seismic
Design
Category
(SDC)
~
Sto Location
Braced Wail
Line Length
ethod LIB
METHODS DWB,
SFB,GB, PBS, PCP,
HPS
ethod WSP
Continuous
Sheathing
- 1D NP 6.0 2.0 1.7
20 NP 12.0 4.0 3.4
Q ~ 30 NP 18.0 ~ 6.0 5.1
® 40 NP 24.0 8.0 6.8
50 NP 30.0 10.0 8.5
10 NP NP 4.5 3.8
20 NP NP 9.0 7.7
SDC Do or D~ 30 NP NP 13.5 11.5
~ ~ 40 NP NP 18.0 15.3
~ 50 NP NP 22.5 19.1
10 NP NP 6.0 5.1
20 NP NP 12.0 10.2
30 NP NP 18.0 15.3
40 NP NP 24.0 20.4
50 NP NP 30.0 25.5
67
SOIL CLASS Da
WALL HEIGHT = 10 FT
10 PSF FLOOR DEAD LOAD
15 PSF ROOFICEILING DEAD LOAD
BRACED WALL LINE SPACING < 25FT
-
MINIMUM TOTAL LENGTH (feet) OF BRACED WALL PANELS REQUIRED
ALONG EACH BRACED WALL LINE
Seismic
Design
Category
(SDC)
tory Location
Braced Wali
Line Length
ethod LIB
METHODS DWB,
SFB,GB, PBS, PCP,
HPS
ethod WSP
Continuous
Sheathing
10 NP 8.0 2.5 2.1
20 - NP 16.0 5.0 4.3
Q ~ 30 - NP 24.0 7.5 6.4
e 40 NP 32.0 10.0 8.5
50 NP 40.0 12.5 10.6
10 NP NP 5.5 4.7
20 NP NP 11.0 9.4
SDC Dz j~ 30 NP NP 16.5 14.0
~ 40 NP NP 22.0 18.7
~ 8 50 NP NP 27.5 23.1
10 NP NP NP NP
J~ 20 NP NP NP NP
u 30 NP NP NP NP
u 40 NP NP NP NP
u 50 NP NP NP NP
For SI: 1 foot = 304.8 mm, 1 pound per square foot = 47.89 Pa.
a) Wall bracing lengths are based on a soil site class "D." Interpolation of bracing
length between the SdS values associated with the seismic design categories
shall be permitted when asite-specific SdS value is determined in accordance
with Section 1613.5 of the California Building Code.
b) Foundation cripple wall panels shall be braced in accordance with Section
R602.10.9.
c) Methods of bracing shall be as described in Sections R602.10.2, R602.10.4 and
R602.10.5.
d) Methods GB and PCP braced wall panel h/w ratio shall not exceed 1:1 in SDC
Do, D1, and D2. Methods DWB, SFB, PBS, and HPS are not permitted in SDC
Do, D1, and D2.
68
jg) Intermittent Bracing Methods. Amend Table R602.10.2 of the 2010
California Residential Code to read as follows:
TABLE R602.10.2
INTERMITTENT BRACING METHODSa
8d common (2'/2" x 0.131) nails at 6" spacing (panel edge) at 12".spacing (intermediate
supports), 318" edge distance to panel edge
ad«,rf~~:a.aaaa~asar
8"
aing fpa~et $dge7 ~ i2°
z ~
s ltcatl $ifxa3r${ r9n€i
+~rz meslESn ~;i:'c3a1 ] i ' ~ ~~
aertrcG6ate supporisj, €
P 9 ~
K - J
338° edgd Vi.£~.~"+$ SO ~t+E19f}p8
M
1T z'-~Iw.£mz~ e4ry~~>,~siiz s£i
.
c
mie:kUta3 {"pr
{ '?a+*-narjrntrrn 45' a
'
`w.'r$ '~ 3$ E~ # .v ~d ~hr'ttf!it~{ ~ xi
31v75-'4'ik°
I ~d-srksmJ shsa(kai~} Studs a=
D ~ `
_
at 3" s~.vcirg ~-7s7 a08esJ & ~i
Ep~'?n3 Si!texnad', e a?~twa? ~
H amsaeixa ~i> ex,~gs3
~}bA$ 86QC33£~IU4'1~2C=} a'tld
DC~~"B }'1{v'~2£ X140 bGR#J 4F.Sd
G€t fdf~$wT+3rtaTa £i' ; £' par ilt;:x~raxt to 4atrw,
J
3 Sh$Ga lB+'affiP+t sIYE. SSB
SYaaam. bastd satl rr ssroe-~e, 3
~ see Te§ie ~r~
€
3
t
`
~
]
( 3' '3at•RnE ~rq~adsm
~~ P'xR£C`2I3Edfi' fih$Shkl~
' ~ flT
/4 {4Y'Yti35tifY2~ 3~ ~-~
~
j
j
~ ~i CCe.4}Fa<}P. 4E'1 ~ %~ li} fla2'~£
zro:t Stt-k?+i ,
t=47 ,,SUd si"<sme f
]
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;
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~
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SiibE'Ri§ ~$~ $t~$$} AS ~
Y
s S
$kLt~{i'£`J?iT tt'C SG~C~9p s
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I~t~d[etf£$mE '2 e'Ct6i; r{T [~~3 ~
~~ ~+S$3GN~ i
r ~Ia~szP--` FN ig8i~flCtri i~~ a`{C~ S#te 11~ j
y
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3 j
a. Methods GB and PCP braced wall panel h/w ratio shall not exceed 1:1 in SDC Do, D~,
and D2. Methods LIB, DWB, SFB, PBS, HPS, and PFG are not permitted in SDC Do,
D~, and D2.
69
(h) Alternate braced wall panel. Amend Figure R602.10.3.2 of the 2010
California Residential Code to read as follows:
__
AI'ai.43Ks2' TN?CK Y. 5T.fih^
x_ OAti£L&k~&YHktiP:: L4`t ih#iE T3
bGtlL}Li:ld2 xa
rRe.~.~tf ;nax~taxw
~..„,, ~-
~` STiiOSUNC[R t~1t
R~
C Hi33.Ds'lt3flR S4RAP.YYP~
~~~RT.~
RGG.`~.9y~:$, (~Ll7it SNC°+~HTs'7e? ..
LitS~T1.~ STRAF.S3ttE
Xh SWJ.£&EPERtattTEP
_~gEA`TY'w~HEK3 SkTNE 1
'CFlK~+STRa[~T#fl~?d. MsFCL t
TOP PLAT6S SHALL 8E CDHTIMUOLIS 94ER #iBRAC~ WALL LINE
I =
~ i _LAJ,R PA3`Et L"3PL3„£7bF t~£fYklS}
'µ h£`YHIi:t~4 YAkt£LEt3GiE~. S!#~'.L
~~.TLY*£RAh`G 9E PASTS£:ECt TG
. .-° .ik'-Ct~7 iRRi~kt.
s , ^^.
Z
_-G
td4.S.:.~ fi fl.G.AZPL L°a.
j} a- --" ' fCSR SliWwLfi STt?Rb"AaKi AT»• G*L".
1 {: #°NdELE:FflR THG~RRTST sus
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t".WitkY)R*FO~Y3k`G ^.wC U1:5ER
tIP£Htt9G3$ is x7l 7?EL'JYiCL+fs° :
~~
(i) Portal frame. Amend Figure R602.10.3.3 of the 2010 California
Residential Code to read as follows:
a: re~ara~ H~~=r~
3'rr~.~wta~rsK;~E~v~..~t~.s}
"
x
i ~.uu ~x,s ~a~rr~aa
a
~ r~ ~a
rns~,a ~n~.n^~ .o~~:vrg,
~aoFus t~ ss~sxu:~a aaue~a° s~ a v. ova
.:_t'r}fig 5T~F?t4i'"£5t?Ei?39?..",
V F*5'wr-°`E`3$}~,q;}.,~";{~HEil~%47~4i ~d4,C}fi44t'.X~
1i#K -°£.W's;5 ttiu GZ.~Y Vie:: S{tz,R35HC}P+'9A
Hf#:+HT ~f1G 1'8=i.FH.t#I,~i.SFi333 ,. N~i;;t1351e»55'CfF;
~,~,
1F2zd 3:.t~fKl~:f:l~
ts5E6. °H£.2et`5lsUST
~sdE?L2~d F.~thtiiCUti ?tE?tn3tE3i'~?C'iE°tFEst
15732"At4N. A'3?iGK*#E>S~
LEwt~ ~.'.i~E~ €.YT~
t 1°SZO Fef.#khXi}
eR522ta:8.3
FIGURE R602.10.3.3
METHOD PFH: PORTAL FRAME WITH HOLD-DOWNS AT DETACHED GARAGE
DOOR OPENINGS
n
(j) Method PFH. Amend Section R602.10.3.3 Item 1 of the 2010 California
Residential Code to read as follows:
1. Each panel shall be fabricated in accordance with Figure R602.10.3.3. The wood
structural panel sheathing shall extend up over the solid sawn or glued-laminated
header and shall be nailed in accordance with Figure R602.10.3.3. A spacer, if used
with abuilt-up header, shall be placed on the side of the built-up beam opposite the
wood structural panel sheathing. The header shall extend between the inside faces of
the first full-length outer studs of each panel. One anchor bolt not less than 5/8-inch-
diameter (16 mm) and installed in accordance with Section R403.1.6 shall be provided
in the center of each sill plate. The hold-down devices shall be an embedded-strap type,
installed in accordance with the manufacturer's recommendations. The panels shall be
supported directly on a foundation that is continuous across the entire length of the
braced wall line. The foundation shall be reinforced as shown on Figure R602.10.3.2.
This reinforcement shall be lapped not less than 24 inches (610 mm) with the
reinforcement required in the continuous foundation located directly under the braced
wall line.
~z
(k) Continuous sheathing. Amend Table R602.10.4.1 of the 2010 California
Residential Code to read as follows:
T'RSLE R&42,54.&.i
CON7~FUflIJS SHEATHMIG i3ETHCt6S
Zd£T3I06 7ak.TERtAL '_ ~tlNiUSJId YHI~KHESS F1GLiR£ ~ CYNiNEC.71i}N ~CI2tiFRtA
~+J ta~msm ~`n ~.. ~.>"? mss
&" ~ S~}aC~^y /dYd
i
' . 2~ffEfri 3Rd
T' }
t
u~-i v? J!tp~d $4f'JC{WSE (~, Re3 I 7a1,;.2' g
n ~a~t9rtsj
-4 k='
3
"A~
" ?'oc-d str+h`4u<t aane3 d~a^.:aM
to
ar as a
esr
s 3RC ~ *~.p.,
'
'
'
L
,.-fi q
p
} # Y ~
~ ~ ~ ~
I Sea k4ziF3o5 ~
~
SP
suF~Faamp rant laae ad}a't [ r-
~ F
C~•~.= 4RMItW6'S3 QpRd( HHYfte ° 5as aW4I"+S-R x ~ ~ f ~ '.if£2:~ ~WR
fats "v,$=.. _ t«...Y"~ r~o92.iC...?.t
i
l3s3
t
7~
(I) Method CS-PF. Amend Figure 8602.10.4.1.1 of the 2010 California
Residential Code to read as follows:
~ .., ~. _
~~~, ~ ...~. $afi~'i 1W,:ti SEC, ~EZ{3 PEF Pdi~2 aJ
€ .. _. ____ __ y ,
t '
` F ~Yki'$MY4kFHtvy,^"CJ t?i 6''J~k ;ccFH2'-C°~ayt'.za.
i? ~` hxEi5k.3..sR.~d'AtTS&`~r«iG'..'N?ND 3`Z~~.'P.'
-tAA:. ~: +uf^~,i~NtG tSYJGiau55LL4fi33*P
'.n:L4t ? `H%ffi4If~iS?:z5`«*tE+7 Z}-t'»Y'CId.~St~'4N'i~.
°._ RkMk~'V`MP{~#}£~S#3e+PSF~t4~t°at£~aTEk,=fFN-':
- PA'=Ci*t+;;E FiTS~Q~ aa? ir.S€+I:.:~ K~ 3,41QE
~¢t `. as~~tx:~~N~NT`~e~.cx~rraNr
,,ir.. -.yt~ =z~uaaaei~ sauw= a H~~ea+ a,F,rv.a.°.:sswux
~'E'-'-7 +~."t3B 4"+'EK.§Np 8f 3?SflEU TCSCf3aV.s^~.h ffi££Y~'~t3,:N~.=
i ."~£tifiVfTts't3,*~2iGIT 4z`YX'~:.~!s xsz?3ii. Chc<_kbvt ~? '
iif .,. 3" L°.£ biz 3Sa`:E`JIIiNE~ fi3 fn PA`ac[ _~`i~ -^
~.. '#;G~S'k~.K_Tt~vl %+*:GS'~E4'~T3a:.4#s3
;'N.a2 NtiYt}k .T"{$/SSHf'i 4N
L°v4 ~`
vtiCN6F Evt'Fc~h'AiL'°i.S.S 17'^
'--- ~ xh`CNJ4 EQcT5 r_y 3d;3'* t+F..;Q!J~&3-.
' =xsa.sxo zzz7• r rt~a
`PkF ~aSt k~y.7G:a.& rsvsr nuncxf acsaacraawr sir
us~~3(ta,k
(m) Braced wall panel. Delete Section 8602.10.7.1 of the 2010 California
Residential Code
(n) Lateral support. Amend Section 8802.8 of the 2010 California Residential
Code to read as follows:
8802.8 Lateral support. Roof framing members and ceiling joists having a
depth-to-thickness ratio exceeding 2 to 1 based on nominal dimensions shall be
provided with lateral support at points of bearing to prevent rotation. For roof rafters with
ceiling joists attached per Table 8602.3(1), the depth-thickness ratio for the total
assembly shall be determined using the combined thickness of the rafter plus the
74
attached ceiling joist.
(o) Additional requirements. Add Section R803.2.4 to Chapter 8 of the 2010
California Residential Code to read as follows:
R803.2.4 Openings in horizontal diaphragms. Openings in horizontal
diaphragms shall conform with Section R503.2.4.
8.22.050 Residential foundations.
(a) Foundation application. Amend Section R401.1 of the 2010 California
Residential Code to read as follows:
R401.1 Application The provisions of this chapter shall control the design
and construction of the foundation and foundation spaces for all buildings. In addition to
the provisions of this chapter, the design and construction of foundations in areas prone
to flooding as established by Table R301.2(1) shall meet the provisions of Section
R322. Wood foundations shall be designed and installed in accordance with AF&PA
PWF.
Exception: The provisions of this chapter shall be permitted to be used for wood
foundations only in the following situations:
1. In buildings that have no more than two floors and a roof.
2. When interior basement and foundation walls are constructed at intervals not
exceeding. 50 feet (15 240 mm).
Wood foundations in Seismic Design Category Do, Di or DZ shall not be permitted.
~s
Exception: In non-occupied, single-story, detached storage sheds and similar uses
other than carport or garage, provided the gross floor area does. not exceed 200 square
feet, the plate height does not exceed 12 feet in height above the grade plane at any
point, and the maximum roof projection does not exceed 24 inches.
(b) Wood foundation walls. Amend Section R404.2 of the 2010 California
Residential Code to read as follows:
R404.2 Wood foundation walls. Wood foundation walls shall be constructed in
accordance with the provisions of Sections. R404.2.1 through R404.2.6 and with the
details shown in Figures R403.1(2) and R403.2(3). Wood foundation walls shall not be
used for structures located in Seismic Design Category Do, D~, or Dz.
8.22.060 Residential concrete and masonry chimneys.
(a) Vertical reinforcing. Amend Section R1001.3.1 of the 2010 California
Residential Code to read as follows:
R1001.3.1 Vertical reinforcing. For chimneys up to 40 inches (1016 mm) wide,
four No. 4 continuous vertical bars adequately anchored into the concrete foundation
shall be placed between wythes of solid masonry or within the cells of hollow unit
masonry and grouted in accordance with Section R609. Grout shall be prevented from
bonding with the flue liner so that the flue liner is free to move with thermal expansion.
For chimneys more than 40 inches (1016 mm) wide, two additional No. 4 vertical bars
adequately anchored into the concrete foundation shall be provided for each additional
76
flue incorporated into the chimney or for each additional 40 inches (1016 mm) in width
or fraction thereof.
8.22.070 Residential steel construction.
(a) Cold formed steel framing. Add Section 8301.2.2.3.5.1 to Section
301.2:2.3.5 of the 2010 California Residential Code to read as follows:
8301.1.2.2.3.5.1 AISI S230, Section B1. Modify-AISI S230, Section B1 to read
as follows:
Where No. 8 screws are specified, the required number of screws in a steel-to-steel
connection shall be permitted to be reduced in accordance with the reduction factors in
Table B1-1 when larger screws are used or when the sheets of steel being connected is
thicker than 33 mils (0.84mm). When applying the reduction factor, the resulting number
of screws shall be rounded up.
~~
8.22.080 Residential wood construction.
(a) Fastener schedule. Amend Lines 34 thru 37 of Table R602.3(1) of the 2010
California Residential Code to read as follows:
I t 's%racru;al espUlverc
€ ~{ ° g3h3:at22d mc;mg Rai`
z t
~
..cs~baard s~eaHimg
~ 3 [
I
1
`"ntUEla2i CEIH3ID5iG
1 t f "gakani-~sf rt~~sc~szi!
0
ww ~ j
TJ
+
t~l ` 1d78t3 iG~f.'# ~3d,
~ S
"
m $
-"{ ~
gyys~m shsafn~~ rt
1"7 °ac~xws~ 7ygs%"I ct S 7 ; 7
I
(b) Alternate attachment. Amend Table R602.3(2) of the 2010 California
Residential Code to read as follows:
DV4edztnrcwzxl patch s4iX~afla.lTCi mid waRshe~uw~!}t»ixem»iga»d pusfia#sAuazrE vi~sl~eatUa~g io siekHR~t
n1 t? v ~ p.~3' . 4.G~ h7~ai4.~ i 3 it
~~
~ G.t?'s=4~2 3 6
82
$
Q.C3? • Id.G39 t~ ~Y a
A 6
l f Q.t13 P1a~3~t
3 fi
78
~Iaw txxls:IayuSant plywaad-has+IhaxA-{~. ak~s~~
i
F
i' t 4~! Ong as v~ew:~iark {Y.i3mfi:UrtF I
g
i
_
$Y...
3i i$ S 3 V
~^t ~
ij3. ~.~~} 9$ffiCi: ~t §
~
t
txi rng a: €cdFxr &'+ati~ 5ss:}°t+mimurn
=_z a as z ga. ~.7.C1~'" } :.h~ak c~ama t•r
il't
~
tt.~sng ^r scrcnrr =hruk nti}~,lRimum
$2 $ ::2 4 it''S ~;Z~~~•}:a3&nY i~72=fl21EP 3
3
}
(c) Joist heel joint connection. Add Footnote "i" to Table R802.5.1(9) of the
2010 California Residential Code to read as follows:
i. Edge distances, end distances and spacings for nails shall be sufficient to
prevent splitting of the wood.
(d) Design of wood trusses. Amend Section R802.10.2 of the 2010 California
Residential Code to read as follows:
R802.10.2 Design. Wood trusses shall be designed in accordance with accepted
engineering practice. The design and manufacture of metal-plate-connected wood
trusses shall comply with ANSI/TPI 1. The truss design drawings shall be prepared by a
registered professional.
SECTION 14. Chapter 8.24 of the Santa Monica Municipal Code is hereby
amended to read as follows:
Chapter 8.24 Electrical Code.
~9
8.24.010 Adoption
That certain document entitled "California Electrical Code, 2010 Edition,"
which- adopts by reference the National Electrical Code, 2008 Edition, as
published by the California Building Standards Commission and the National Fire
Protection Association including Article 89, Annex C, are hereby adopted with the
local amendments and provisions of this Chapter, as the Electrical Code of the
City of Santa Monica.
8.24.020. Local amendments to the California Electrical Code.
Notwithstanding any provisions of the California Electrical Code, California
Building Standards Code, or other codes adopted by any Chapter in Article VIII of the
Municipal Code to the contrary, the following local amendments shall apply.
8.24.040 Electrical appliances, devices, materials and equipment
regulations.
(a) Use of Approved Materials.. No person, firm or corporation shall use any
electrical material, device, appliance or equipment, designed or intended for
attachment, directly or indirectly, to any electrical system, circuit or electrical service for
light, heat or power in the City unless such electrical material, device, appliance or
equipment complies with the provisions of this Chapter. The Building Officer is hereby
empowered to enforce the provisions of this Chapter.
(b) Rating. All electrical materials, devices, appliances, or equipment
so
designed or intended for attachment, directly or indirectly, to any electrical system,
circuit or electrical service for light, heat or power, shall be only those that conform with
the requirements of this Chapter. Each such article shall bear or contain the makers
name, trademark or identification symbol, together with such rating by the manufacturer
as may be necessary to determine the intended use. The correct operating voltage,
amperage and total watts shall be stated and no person shall remove, alter, deface or
obliterate any such marking.
(c) Approvals. All electrical materials, devices, appliances, or equipment
covered by and intended to be regulated by this Chapter shall conform to the published
National Safety Standards for such materials, devices, appliances or equipment on file
in the office of the United States Bureau of Standards. Copies of these standards are on
file in the-office of the Building Officer and shall be open to inspection by the public.
Listing or labeling by the Underwriters Laboratories, Inc., or other recognized testing
laboratory whose standards are on file with the United States Bureau of Standards shall
be prima facie evidence of conformity with these required standards. Where no such
standards exist for any material, device, appliance or equipment, the Building Officer
may designate a standard for each article submitted, which shall specify the tests
necessary to provide the degree of safety to life and property as is generally required by
the National Standards for approved materials, devices, appliances and equipment of
similar or related character or nature.
(d) Revocation. Any approval granted by the Building Officer may be revoked
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if the electrical material, device, appliance, or equipment is found to be hazardous,
unsuitable for the purpose used or intended, or does not conform with the standards
under which it was approved for use.
(e) Exceptions. The provisions of this Chapter shall not be deemed to apply
to:
(1) Safe, substantial, used or second-hand devices or appliances, provided
that all parts or equipments used in rebuilding or reconstruction shall conform in all
particulars with the National Standards for such article, and provided further, that such
articles shall have the same degree of safety to life and property as may then be
.required in a new article of the same type.
(2) Electrical materials, devices, appliances and equipment which are safe
and suitable for the purpose used or intended, provided such materials, devices,
appliances and equipment are already fully covered and regulated by existing laws and
ordinances now in effect.
(3) Vehicles or motor vehicle equipment.
(4) Industrial or commercial appliances which are to be used in a specific
location, and which have been submitted to a recognized laboratory for approval as
conforming to the standards required hereof but on which final approval is still pending;
provided, however, that exemption from the provisions of this Code shall be granted
separately for each appliance only when satisfactory written evidence has been filed
that laboratory approval has been applied for, and shall continue in force only during
a2
such time as the Building Officer has reason to believe that the testing laboratory will
grant final approval certifying compliance to the prescribed standards.
8.24.050 Used materials.
Previously used materials shall not be re-used. in any work without the advance
approval of the Building Officer.
8.24.060 Temporary service poles and associated feeder poles.
(a) The minimum size of a wood pole used to support service equipment,
distribution equipment and/or conductors shall be six inches by six inches (nominal) if
square, or have a top diameter of at least five inches if round, and be of sufficient length
to maintain all required overhead clearances as specified in the California Electrical
Code, but in any case, shall not be less than twenty feet long. The pole shall meet
structural requirements and shall be embedded a minimum of four feet in the ground.
Exception: Afour-inch by four-inch (nominal) wood pole, or equivalent, embedded a
minimum of four feet in the ground, shall be permitted for distribution poles used to
support temporary wiring for other than construction power in conformance with the
California Electrical Code and located in areas accessible to pedestrians only.
(b) Provisions for Temporary Services.
Wiring Methods. Raceways on temporary service poles shall be rigid
metal conduit, intermediate metal conduit, electrical metallic tubing or schedule 80 rigid
nonmetallic conduit.
a~
If a driven rod or pipe is used for grounding of a temporary service on an erected
pole, it shall be driven at least eighteen inches from the pole.
8.24.070 Underground concrete vaults and handholes.
(a) Scope. The following requirements apply to .the use of specially
constructed underground concrete vaults and to handholes.
(b) Definitions.
(1) Vault. A chamber in an underground conduit distribution system
containing sufficient working space and an entrance for personnel.
(2) Handhole. A chamber smaller than a vault in an underground conduit
distribution system having a removable cover and used in lieu of a listed pull box.
(c) Concrete Vault Provisions.
(1) The inside dimensions of an underground concrete vault shall be not less
than four feet in width and four feet in length.
(2) The inside height shall be not less than five feet between the floor and the
top or ceiling.
(3) Circular access openings shall be not less than twenty-six inches in
diameter and rectangular access openings shall be not less than twenty-four inches by
twenty-six inches.
(4) Vaults shall be installed only in permanently accessible locations outside
of buildings.
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(5) Where exposed to vehicular traffic, the enclosures and their related covers
shall be designed for that purpose.
(6) Where subject to inundation or exposure to the elements, covers shall be
suitably sealed.
(7) Conduits shall enter the vault in a manner consistent with the type of
wiring method used in accordance with the following:
(A) Conduits shall enter the enclosure through the walls and be terminated in
a manner that provides suitable protection for the type of wiring method used
(B) Conduits entering the enclosure walls shall terminate not less than two
inches from the bottom or one foot from the top.
(C) Direct burial conductors shall enter the enclosure by means of conduit
nipples which. shall be suitably sealed.
(8) Suitable wall supports or racks shall be provided to secure open
conductors in a fixed position two inches or more above the floor.
(g) Walls and floors shall be made of concrete having a minimum thickness of
six inches. Ceilings shall be made of concrete having a minimum thickness of eight
inches.
(10) Exposed noncurrent-carrying metal parts of equipment, conductor
supports or racks, conduits and other metal appurtenances, including any metal cover
and its supporting ring, shall be bonded together and connected to a common ground.
The size of the grounding means shall be as prescribed in
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the California Electrical Code. Where the grounding means is exposed, the grounding
conductor shall be not smaller than # 8 AWG copper.
(d) Handholes Provisions. Except as modified by this subsection, the
provisions of subsections (c)(4) through (c)(10) for vaults shall apply to handholes.
(1) The handhole shall be so designed that the conductors may be pulled,
spliced or otherwise handled without requiring a person to enter the enclosure.
(2) The minimum depth of handholes shall be eighteen inches and the width
shall not be less than half the depth. Handholes shall not exceed three foot in depth
from finish grade to the bottom of the handhole.
(e) Prefabricated concrete boxes and their covers that are designed for the
purpose of handholes, having dimensions less than set forth in subsections (c) and (d)
of this Section, may be used as vaults and handholes where specifically approved by
the Building Officer.
8.24.080 Solar photovoltaic systems-Disconnecting means for multiple
arrays.
Where the conductors of more than one array are combined to form a single
output conductor, a disconnecting means rated for the voltage and ampere rating of the
output conductor shall be installed immediately adjacent to the combiner box on the
output side.
Exception 1: The required disconnecting means in this Section shall not be
86
required if the combiner box is located adjacent to the inverter.
Exception 2: The required disconnecting means in this Section shall be not
required for one-and-two family dwellings where the rating of the solar photovoltaic
system is not more than 10KW.
8.24.090 Protection of metallic enclosures in a marine environment.
Where a metallic enclosure is installed outdoors within 804.7 meters (0.5 miles)
from the mean shoreline, the enclosure shall have adequate protection against severe
corrosive influences.
SECTION 15. Chapter 8.28 of Santa Monica Municipal Code is amended to read
as follows:
Chapter 8.28 Mechanical Code.
8.28.010 Adoption.
That certain document entitled "California Mechanical Code, 2010
Edition,"-which adopts by reference the Uniform Mechanical Code, 2009 Edition,
as published by the California Building Standards Commission and the
International Association of Plumbing and Mechanical Officials, (excluding
Sections 104 through 117), including Chapter 1, Division I, Sections 101, 102,
103, Appendixes B, C, D, are hereby adopted as the Mechanical Code of the City
s~
of Santa Monica.
SECTION 16. Section 8.32.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.32.010 Adoption.
That certain. document entitled "California Plumbing Code, 2010 Edition,"
which adopts by reference the Uniform Plumbing Code, 2009 Edition, as
published by the California Building Standards Commission and the International
Association of Plumbing and Mechanical Officials (excluding Sections 102, 103,
Appendix L), including Chapter 1, Division I, Appendices A, B, D, G, I, K, are
hereby adopted with the local amendments and provisions of this Chapter, as the
Plumbing Code of the City of Santa Monica.
SECTION 17. Section 8.32.020 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.32.020 Local amendments to the California Plumbing Code.
Notwithstanding -any provisions of the California Plumbing Code, California
Building Standards Code, or other codes adopted by any Chapter in Article VIII of the
Municipal Code to the contrary, the following local amendments shall apply.
SECTION 18. Section 8.36.010 of the Santa Monica Municipal Code is amended
as
to read as follows:
8.36.010 Adoption.
That certain document entitled "2010 Building Energy Efficiency
Standards-Standards for Residential and Nonresidential Buildings" which adopts
Part 6 of Title 24 and Article 1 of Part 1 of the California Code of Regulations, as
published by the California Building Standards Commission and the California
Energy Commission is hereby adopted as the Energy Code of the City of Santa
Monica, subject to the provisions of Chapter 8.108 Green Building Design and
Construction Standards.
SECTION 19. Section 8.40.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.40.010 Adoption.
That certain document entitled "California Fire Code, 2010 Edition," which
adopts by reference the International Fire Code, 2009 Edition, as published by
the California Building Standards Commission and the International Code
Council (excluding Sections 105.3.2, 108, Appendix A), including Chapter 1,
Division I, Chapter 1, Division I I, Appendices Chapter 4, B, BB, C, CC, H, and the
most recent referenced version, adopted by the State of California, of the
s9
National Fire Codes as published by the National Fire Protection Association, are
hereby adopted with the local amendments and provisions of this Chapter, and
with Chapter 8.44 of the Santa Monica Municipal Code, as the Fire Code of the
City of Santa Monica.
SECTION 20. Section 8.40.020 of the Santa Monica Municipal Code is
hereby amended to read as follows:
8.40.020 Local amendments to the California Fire Code.
Notwithstanding any provisions of the California Fire Code, California
Building Standards Code, State Housing Law or other codes adopted by any
Chapter in Article VIII of the Municipal Code to the contrary, the following local
amendments shall apply.
(a) Chapter 5, Section 505.1.1 of the California Fire Code is
added to read as follows:
505.1.1 Additional Requirements Numbers shall be a minimum of 6
inches high for commercial structures and 4 inches high for interior suites,
offices, rooms etc. and one and two family dwellings with a minimum stroke width
of 0.5 inch. All buildings shall display the assigned address number so as to be
visible from the street and alley upon which the address is based. Numbers shall
be in contrast to their background.
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(b) Chapter 9, Section 901.10 of the California Fire Code is added to
read as follows:
901.10 Problematic systems and systems out of service. In the event
of a failure of afire-protection system or an excessive number of accidental
activations, the Fire Chief is authorized to require the building owner or occupant
to provide fire watch personnel until the system is repaired. The chief is
authorized to require the building owner or occupant to provide a fire watch.
(c) Chapter 9, Section 901.11 of the California Fire Code is added to
read as follows:
901.11 Firewatch. The chief is authorized to require the building owner
or occupant to provide a fire watch with personnel acceptable. to the Fire Chief
until documentation is provided that the system is repaired and is operational.
Such individuals shall be provided with at least one approved means for
notification of the fire department and their only duty shall be to perform constant
patrols of the protected premises and keep watch for fires.
(d) Chapter 33, Section 3309 of the California Fire Code is added to
read as follows:
3309 Seizure of Fireworks. All fireworks shall be illegal in the City of
Santa Monica including California State Fire Marshal Safe and Sane. The fire
code official shall have the authority to seize, take and remove fireworks and/or
safe and sane fireworks stored, sold, offered for sale, used or handled in violation
9i
of the provisions of Title 19 CCR, Chapter 6 and Health and Safety Code,
Chapter 9. Exception: When permits are issued for such use:
SECTION 21. Section 8.44.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
Chapter 8.44 Fire and Life Safety Prevention Requirements.
8.44.010 Application.
Notwithstanding any provisions of the California Building Code, California
Residential Code, California Fire Code, California Building Standards Code, State
Housing- Law or other codes adopted by any Chapter in Article VIII of the Municipal
Code to the contrary, the following local amendments shall apply.
SECTION 22. Section 8.44.050 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.44.050 Requirements for automatic fire extinguishing. and
protection sprinkler systems.
(a) When Required. An approved automatic fire sprinkler system shall
be installed as set forth in this Chapter under the following conditions:
9z
(1) In all newly constructed buildings, without regard to floor area or
area separation walls except detached one-story two-car residential garages
(including minor accessory uses such as laundry areas or bathrooms under one
hundred square feet) provided that the new garage is located a minimum of six
feet away from any other building on the same lot.
(2) Throughout any existing building, when there is a change in
occupancy classification to a more hazardous division, as shown in Table 8.44-A
or as determined by the Fire Chief.
TABLE 8.44-A~
DEGREE OF OCCUPANCY HAZARD
Rank
OCCUPANCY CLASS
1. Groups E and I
2. Groups A, Divisions 1, 2, 4 and 5
3. Group R, Division 1 and 2 and Group A,
Division 3
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4. Group H, Divisions 1, 2 and 5
5. Group H, Division 3, 4;
6. Groups B, F, and M; Group S, Divisions 1 and 2
7. Group R, Division 3
8. Group U
'To use the table -Step 1. Find the existing occupancy classification or
division in the occupancy class column. Step 2. If the new occupancy
classification or division is ranked above the existing class, .then the entire
building requires a full automatic fire sprinkler system.
(3) Throughout any existing building greater than one thousand square
feet, whenever more than fifty percent cumulative, of the existing floor area,
including mezzanines, is added to within three calendar years.
(4) Throughout any existing building one thousand square feet or less,
whenever more than seventy-five percent cumulative, of the existing floor area,
including mezzanines, is added within three calendar years.
(5) Throughout any existing building greater than one thousand square
feet, whenever more than fifty percent of the interior and exterior walls and
ceilings are exposed.
(5) Throughout any existing building one thousand square feet or less,
whenever more than seventy-five percent of the interior and exterior walls and
94
ceilings are exposed.
(7) Throughout any existing building other than a single-family
dwelling, whenever an additional story is added.
(8) Throughout any single-family dwelling greater than one thousand
square feet, whenever an additional story is added and the new floor area for the
additional story increases the existing floor area by more than thirty-three and
one-third percent.
(9) Throughout any single-family dwelling one thousand square feet or
less, whenever an additional story is added and the new floor area for the
additional story increases the existing floor area by more than fifty percent.
(10) Throughout any existing building or structure determined to be used
primarily for public assembly more than five thousand square feet in total floor
area. This subsection shall not apply to buildings or structures with an approved
full automatic fire sprinkler system or to churches and theaters with fixed seating.
(11) Throughout the entire floor of any existing non-residential building
equipped with a partial fire sprinkler system whenever more than fifty percent of
the floor space is altered or reconfigured.
(b) Exceptions. The requirements of subsection (a) of this Section shall
not apply to:
(1) Hospitals as defined in Health and Safety Code Section 1250;
(2) Buildings such as power plants, lookout towers, steeples, grain
9s
houses, and similar structures with noncontinuous human occupancy only when
so determined by the Fire Chief;
(c) When a fire sprinkler system is required in any building that does
not have a designated occupant and use at the time fire sprinkler plans are
submitted for approval, the system shall be designed and installed to deliver a
minimum density of not less than that required for Ordinary Hazard, Group 2,
with a minimum design area of not less than three thousand square feet.
When a subsequent change in occupancy classification requires the fire
sprinkler system to deliver a higher minimum density, it shall be the responsibility
of the building owner to upgrade the system to the required density for the new
use.
SECTION 23. Sections 8.44.060 and 8.44.070. of the Santa Monica Municipal
Code are hereby repealed.
SECTION 24. Section 8.44.110 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.44.110 Standards for fire protection systems.
(a) General. Fire protection systems shall conform to the standards adopted
by Chapter 8.40 of the Municipal Code and to supplemental requirements of the Fire
Chief.
9s
(b) System Monitoring. Alarm systems, required by Chapter 8.40 of the
Municipal Code shall be monitored by an approved and listed central station. Exception:
Fire sprinkler systems containing less than one hundred heads may be provided with a
local alarm.
(c) Annunciation and Control. Extinguishing systems shall include control
valves and signaling devices to control and indicate system operation by floors or other
approved subdivisions. An approved annunciator panel shall be provided in an
approved location near the principal entrance.
(d) Fire Department Connections and System Zones. Systems shall be
provided with listed Fire Department connections at approved locations on public street
frontages. Multiple exterior connections and system zones shall be interconnected.
(e) Design, Approval, Acceptance, Testing and Maintenance. Fire alarm
systems shall be maintained in an operable condition at all times. When required by the
Fire Chief, an approved fire watch shall be provided and maintained while a fire and life
safety system is inoperative or impaired. The fire watch shall be maintained until the
inoperative or impaired system is restored a fully operational condition and a test is
approved by the Fire Department.
(f) Approval, Acceptance, Testing of New Fire Alarm Systems. New fire
alarm systems shall be designed, installed, tested and maintained in accordance with
the provisions of the National Fire Alarm Code published by the National Fire Protection
Association.
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(g) Existing Fire Alarm Systems. Existing fire alarm systems shall be tested
and maintained in accordance with the provisions of the National Fire Alarm Code.
(h) Notification Devices. All one and two family dwellings having a fire
sprinkler system installed in compliance with NFPA 13-D shall have an approved alarm
bell installed on or near the address side of the building. NFPA 13 systems shall have a
horn/strobe installed on the address side of the building.
SECTION 25. Section 8.48.100 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8:48.100 Windows/sliding glass doors.
The following requirements must be met for windows and sliding glass doors:
(1) Except as otherwise specified in Municipal Code Sections 8.48.120 (Special
residential building provisions) and 8.48.130 (Special commercial building provisions),
all openable exterior windows and sliding glass doors shall comply with the tests as set
forth in Section 8.48.140 (Tests).
(2) Window assemblies which are designed to be openable and which are
regulated by this Chapter shall comply with California Building Code, unless such
windows are protected by approved metal bars, screens or grilles.
(3) Sliding door assemblies regulated by this Chapter shall comply with
California Building Code.
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(4) Louvered windows shall not be used when any portion of the window is less
than twelve feet vertically or six feet horizontally from an accessitrle surface or any
adjoining roof, balcony, landing, stair tread, platform, or similar structure.
SECTION 26. Section 8:48.120 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.48.120 Special residential building provisions.
(a) Except for vehicular access doors, all exterior swinging doors of any
residential building and attached garages, including the door leading from the garage
area into the dwelling unit shall be equipped as follows:
(1) All wood doors shall be of solid core construction with a minimum thickness of
one and three-fourths inches, or with panels not less than nine-sixteenths of an inch
thick. Swinging doors shall comply with California Building Code. Doors in pairs shall
be tested in pairs.
(2) A single or double door shall be equipped with a single cylinder deadbolt lock.
This deadbolt lock must be actuated by a key from the exterior and a knob or thumb
turn from the interior and when projected becomes locked against return by end
pressure. The bolt shall have a minimum projection of one inch and be constructed so
as to repel cutting tool attack. The deadbolt shall have an embedment of at least three-
fourths of an inch into the strike receiving the projected bolt. The cylinder shall have a
99
cylinder guard, a minimum of five pin tumblers, and shall be connected to the inner
portion of the lock by connecting screws of at least one-fourth of an inch in diameter. All
installation shall be done so that the performance of the locking device will meet the
intended anti-burglary requirements. A dual locking mechanism constructed so that both
deadbolt and latch can be retracted by a single action of the inside door knob, or lever,
may be substituted provided it meets all other specifications for locking devices.
(3) The inactive leaf of double door(s) shall be equipped with metal flush bolts
having a minimum embedment of five-eighths of an inch into the head and threshold of
the door frame.
Single-swinging doors and the active leaf of doors in pairs shall be equipped with an
approved exterior key-operating deadbolt which has been tested in accordance with
California Building Code. See Chapter 10 of the California Building Code for
requirements on door operation for exiting.
(4) Glazing in exterior doors or within forty inches of any locking mechanism shall
be of fully tempered glass or rated burglary-resistant glazing, except when double
cylinder deadbolt locks with a key retaining feature are installed.
(5) Except where clear vision panels are installed, all front exterior doors shall be
equipped with a wide angle (one hundred eighty degrees) door viewer.
(b) Street numbers and other identifying data shall be displayed as follows:
(1) All residential dwellings shall display a street number in a prominent location
on both the street side of the residence and on the alley side of the property in such a
i o0
position that the numbers are easily visible to approaching emergency vehicles. The
numerals shall be no less than four inches in height and shall be of a contrasting color
to the background to which they are attached.
(2) There shall be positioned at each entrance of amultiple-family dwelling
complex an illuminated diagrammatic representation of the complex which shows the
location of the viewer and the unit designations. within the complex. In addition, each
individual unit within the complex shall display a prominent identification number, not
Tess than four inches in height, which is easily visible to approaching vehicular and/or
pedestrian traffic.
(c) Lighting in multiple-family dwellings shall be as follows:
(1) Aisles, passageways and recesses related to and within the building complex
shall be illuminated with an intensity of at least one footcandle at the ground level during
the hours of darkness. Lighting devices shall be protected by weather and vandalism
resistant covers.
(2) Open parking lots, garages and carports shall be provided with a maintained
minimum of one footcandle of light on the parking surface during the hours of darkness.
Lighting devices shall be protected by weather and vandalism-resistant covers.
SECTION 27. Section 8.52.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
for
8.52.010 Fencing regulations.
(a) Standards for New Enclosures. Every person, firm or corporation
owning land on which there is situated a swimming pool, pond or other body of water
which contains water eighteen inches or more in depth at any point shall completely
surround such body of water or property with a fence, wall or other structure not less
than five feet above the adjacent grade at all places and with no opening therein more
than four inches in maximum dimensions. Any gate in such fence shall have a latch at
least five feet above the underlying ground and such gate shall be self-closing and
secured when adults are not present.
(b) Existing Enclosures. Every person, firm or corporation owning land on
which there is situated a swimming pool, pond or other body of water which contains
water eighteen inches or more in depth at any point shall completely surround such
body of water or property with a fence, wall or other structure not less than four and
one-half feet above the adjacent grade at all places and with no opening therein more
than four inches in maximum dimensions. Any gate in such fence shall have a latch at
least four and one-half feet above the underlying ground and such gate shall be self-
closing and secured when adults are not present.
For the purposes of this Section, existing enclosures are those enclosures that
were constructed under valid permit issued prior to July 1, 1999.
(c) Requirements for Nonconforming Enclosures. When an existing pool
enclosure is replaced or repaired in excess of fifty percent of its length, the enclosure
~ 02
shall be made to conform to all of the requirements for a new enclosure under prevailing
law.
(d) Applicability of Other Codes and Laws. The provisions of this Section
are in addition to the pool enclosure requirements for public or private pools as required
in Chapter 31 B of the California Building Code
When. conflicting provisions or requirements occur between the provisions of this
Section, the Technical Codes, and other codes or laws, the most restrictive provisions
or requirements shall govern:
SECTION 28. Section 8:84.040 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.84.040 Alterations, repairs or rehabilitation.
Notwithstanding any requirements in the Technical Codes, California Building
Standards Code, or State Housing Law to the contrary, the following shall apply:
Alterations, repairs or rehabilitation to an existing building may be of the same type of
construction as the existing building or structure, provided the aggregate value of such
work in any one year does not exceed ten percent of the replacement cost of the
building, and provided further, that no hazardous conditions or substandard residential
buildings .are continued or created. These provisions shall be retroactive when
specifically required by this Code.
103
Alterations, repairs or rehabilitation in excess of ten percent of the replacement cost of
the building or structure may be made provided all of the work conforms to this Code for
a new building of like area, height and occupancy in the same location and that no
hazardous conditions or substandard residential buildings are continued or created in
the remainder of the building as a result of such work.
Whenever an existing building or structure has been damaged, or is in need of repairs,
or the owner desires to make repairs, alterations or rehabilitation in an amount
exceeding fifty percent of the replacement cost of the building or structure, the entire
building or structure shall be made to conform to all of the requirements of the Technical
Codes or shall be demolished.
For purposes of this Section, the Building Officer shall determine the replacement
cost of the building or structure and may use the most current building valuation table
published by the International Code Council. The Building Officer shall also determine
the fair market value of any necessary repairs and may calculate the fair market value
of repairs as the mean of three responsible bids from properly licensed contractors.
SECTION 29. Section 8.88.010 of the Santa Monica Municipal Code is hereby
amended to read as follows:
8.88.010 Adoption.
That certain document entitled "Uniform Code for the Abatement of Dangerous
104
Buildings, 1997 Edition" as published by the International Conference of Building
Officials, as amended by this Chapter, is hereby adopted as the Dangerous Buildings
Code of the City of Santa Monica.
SECTION 30. Chapter 8.106 of the Santa Monica Municipal Code is hereby
added to read as follows:
Chapter 8.106 Green Building Code
8.106.010 Adoption.
That certain document entitled "California Green Building Standards Code,
2010 Edition", as published by the California Building Standards Commission, is
hereby adopted as the Green Building Code of the City of Santa Monica.
8.106.020 Local amendments to the California Green Building Standards
Code.
Notwithstanding any provisions of the California Green Building Standards Code,
California Building Code, California Residential Code, California Building Standards
Code, or other codes adopted by any Chapter in Article VIII of the Municipal Code to the
contrary, the following local amendments shall apply.
8.106.030 Mandatory and voluntary requirements. Amend Section
101.10 of the 2010 California Green Building Standards Code to read as follows:
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101.10 Mandatory and voluntary requirements. This code contains both
mandatory and voluntary green building measures. Mandatory and voluntary measures
are identified in the appropriate application checklist contained in this code. The
mandatory measures of Chapter 4 and voluntary measures of Appendix A4 are
applicable to new residential buildings. The mandatory measures of Chapter 5 and
voluntary measures of Appendix A5 are applicable to all buildings which are not low-rise
residential buildings.
8.106.040 Low-rise residential building. Amend Section 202 of the 2010
California Green Building Standards Code's definition of LOW-RISE
RESIDENTIAL BUILDING to read as follows:
LOW-RISE RESIDENTIAL BUILDING. A building that is of Occupancy Group R
and is six stories or less, or that is aone- ortwo-family dwelling or townhouse.
8.106.050 Sustainability. Amend Section 202 of the 2010 California
Green Building Standards Code to include the following:
SUSTAINABILITY. Consideration of present development and construction
impacts on the community, the economy, and the environment without compromising
the needs of the future.
8.106.060 Irrigation controllers. Amend Section 4.304.1 of the 2010
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California Green Building Standards Code to read as follows:
4.403.1 Irrigation controllers. Automatic irrigation system controllers for
landscaping provided and installed at the time of final inspection and shall comply with
the following:
1. Controllers shall be weather- or soil moisture-based controllers that
automatically adjust irrigation in response to changes in plants' needs as weather
conditions change.
2. Weather-based controllers without integral rain sensors or communication
systems that account for local rainfall shall have a separate wired or wireless rain
sensor which connects or communicates with the controller(s). Soil moisture-based
controllers are not required to have rain sensor input.
8.106.070 Flashing Details. Amend Section 4.407 of the 2010 California
Green Building Standards Code to read as follows:
4.407.1 Flashing details. Provide flashing details on the building plans
which comply with accepted industry standards or manufacturers instructions. Details
are shown on the house plans at all of the following locations:
1. Around windows and doors.
2. Roof valleys.
3. Deck connections to the structure.
4. Roof-to-wall intersections.
ion
5. Chimneys to roof intersections.
6. Drip caps above windows and doors with architectural projections.
7. Other locations as identified by the Building Officer.
SECTION 31. This The Council finds that the adoption of this Ordinance is
exempt from the provisions of the California Environmental Quality Act pursuant to
CEQA Guidelines Section 15061(b)(3).
SECTION 32. Any provision of the Santa Monica Municipal Code or appendices
thereto, inconsistent with the provisions of this Ordinance, to the extent of such
inconsistencies and no further, are hereby repealed or modified to that extent necessary
to effect the provisions of this Ordinance.
SECTION 33. If any section, subsection, sentence, clause, or phrase of this
Ordinance is for any reason held to be invalid or unconstitutional by a decision of any
court of any competent jurisdiction, such decision shall not affect the validity of the
remaining portions of this Ordinance. The City Council hereby declares that it would
have passed this Ordinance, and each and every Section, subsection, sentence,
clause, or phrase not declared invalid or unconstitutional without regard to whether any
portion of the Ordinance would be subsequently declared invalid or unconstitutional.
SECTION 34. The Mayor shall sign and the City Clerk shall attest to the passage
ios
of this C?rdinance. The City Clerk shall cause this ordinance, or a summary thereof to
be published once in the official newspaper ~rithin 15 days after its adoption. This
Ordinance shalE become effective on January 1, 2011.
APPROVED AS TO rORN1:
~ as
Approved and adopted this 9th day t~Nove er, 20
~ ~ ~ ;
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Mayor
State of California )
County of Los Angeles ) ss.
City of Santa Monica )
i, Maria M. Stewart, City Clerk of the City of Santa Monica, do hereby certify that
the foregoing Ordinance No. 2328 {CGS) had its introduction on October 26th,
2010; and was adopted at the Santa Monica City Council meeting held on
November 9th, 2010, by the following vote:
Ayes: Council members: Bloom, Davis, Holbrook, McKeown, O'Day
Mayor Pro Tem O'Connor, Mayor Shriver
Noes: Council members: None
Abstain: Council members: None
Absent: Council members: None
A summary of Ordinance No. 2328 {CCS) was duly published pursuant to
California Government Code Section 40806.
ATTEST:
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Maria M. Stewart, C ty Clerk