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O1729 CA:atty\muni\laws\cesar\chimney.5 city Council Meeting 2-22-94 Santa Monica, California ORDINANCE NO. 1729 (City council Series) AN EMERGENCY ORDINANCE OF THE CITY COUNCIL OF THE CITY OF SANTA MONICA ESTABLISHING REPAIR AND RECONSTRUCTION CRITERIA FOR UNREINFORCED CHIMNEYS, WALLS OVER 42 INCHES IN HEIGHT, AND RETROFITTING STANDARDS FOR PUBLIC BUILDINGS AND UTILITIES THE CITY COUNCIL OF THE CITY OF SANTA MONICA DOES ORDAIN AS FOLLOWS: SECTION 1. Findinqs and Purpose. The City Council finds and declares: (a) Numerous unreinforced chimneys and walls in the City of Santa Monica were substantially damaged as a result of the January 17, 1994 Northridge earthquake and its continuing aftershocks (hereinafter, "the Northridge earthquake"), and remain in danger of collapse during a future earthquake or aftershock, posing an immediate threat to the public health and safety. (b) It is necessary to establish standards to repair and replace unreinforced chimneys and walls, to reduce the potential for similar damage in the event of another earthquake, in order to preserve the public peace, health and safety. 1 (c) The City water supply infrastructure suffered substantial damage as a result of the Northridge earthquake, and continues to suffer additional damage as a result of its continuing aftershocks. Large sections of the city water supply infrastructure which are publicly owned, or located on public land, public rights of way, or dedicated utility easements (hereinafter, "the public water supply infrastructure") are constructed of unlined rigid cast iron piping, which have proved to be of insufficient flexibility and strength to withstand the stresses caused by earthquake. Numerous breakages have occurred and are continuing to occur in the City's pUblic water supply infrastructure, all in unlined rigid cast iron piping. These breakages have caused and are continuing to cause interruptions of water service to portions of the City, requiring emergency temporary repairs to restore water service. (d) Approximately one third of the City's public water supply infrastructure, 368,729 feet, is constructed of unlined rigid cast iron piping, and is threatened with further breakage from stress caused by movement of the earth. The potential for further interruptions in public water service constitutes a threat to the pUblic peace, health and safety. (e) In order to repair and replace the damaged and threatened public water supply infrastructure with a flexible piping material which is resistant to breakage caused by movement of the earth, thereby reducing the potential for further interruptions of public water service, it is necessary to 2 establish a minimum qualitative standard for the material to be used to repair and replace said infrastructure. (f) In the aftermath of the Northridge earthquake, Santa Monica City Hall (hereinafter, "City Hall") functioned as the center of operations to assess earthquake damage, to restore vital municipal services and to preserve the public peace, health and safety. city Hall is found to be an essential facility necessary for emergency operations subsequent to a natural disaster as defined in the section 2331 of the Uniform Building Code, 1991 Edition, (hereinafter "UBC section 2331"). (g) In the aftermath of the Northridge earthquake, numerous residential buildings were damaged to the extent that a great number of persons were displaced from their homes and left without adequate shelter. Consequently, it became necessary to establish emergency shelters at Santa Monica College and at the Santa Monica civic Auditorium. Of the two facilities, only the Santa Monica civic Auditorium is under the control and jurisdiction of the City. It is essential that the city maintain a facility of sufficient size and occupancy capacity to provide emergency shelter in the event of earthquake or natural disaster. The Santa Monica civic Auditorium is found to be an essential facility necessary for emergency operations subsequent to a natural disaster as defined in UBC Section 2331. SECTION 2. Repair Criteria for Masonry Chimneys. (a) All masonry chimneys shall be altered or repaired 3 according to the following standards: 1. chimneys shall be repaired or reconstructed in compliance with UBC Chapter 37 as adopted by the city of Santa Monica. 2. No damaged unreinforced masonry chimney may be repaired with masonry. 3. Existing unreinforced masonry chimneys, fireplaces, fire boxes, and foundations shall not be used for the support of replacement masonry chimneys. 4. Where the damaged portion of a chimney is located between the roof line and top of the chimney, the damaged portion shall be removed to the roof line, provided the roof and ceiling anchorage are in sound condition. Any reconstructed portion of a chimney shall be braced to the roof structure in compliance with UBC Chapter 37 as adopted by the City of Santa Monica. 5. For a single story structure ih which the damaged portion of a chimney is below the roof line, or the damaged portion extends from above the roof line to below the roof line, the chimney shall be removed to the top of the firebox. 6. For a multi story structure, in which the damaged portion of a chimney is below the roof line, or the damaged portion extends from above the roof line to below the roof line, the damaged portion of the chimney shall be removed from the top of the chimney to a floor line below which no significant damage to the chimney is visible. The remaining portion of the chimney shall be 4 anchored soundly to the structure in compliance with UBC Chapter 37 as adopted by the City of Santa Monica. 7. In any chimney where the firebox has been damaged, the entire chimney and firebox shall be removed to the foundation of the structure. 8. Where the portion of the chimney extending above the roof line exceeds two times the least dimension of the chimney, that portion above the roof line shall be braced to the roof structure. SECTION 3. above 42 inches. Notwithstanding UBC section 301 (b) (2), fences which exceed 42 inches in height as measured from natural grade and are constructed with masonry or concrete material shall require a building permit. Such fences shall be constructed in compliance with the construction standards of the UBC as adopted by the City of Santa Monica. Repair criteria for masonry or concrete fences SECTION 4. Repair criteria for underqround utilities. All portions of the public water supply infrastructure constructed of unlined rigid cast iron piping shall be replaced with ductile iron piping conforming to American Water Works Association (AWWA) Standard C151 and American National Standards Institute (ANSI) Standard A21.11-91. The ductile iron piping shall be rated for a minimum of 350 pounds per square inch (psi) of 5 working pressure. SECTION 5. Essential Facilities. Santa Monica city Hall and the Santa Monica civic Auditorium are designated as essential facilities which are necessary for emergency operations subsequent to a natural disaster as defined in UBC Section 2331. SECTION 6. The City Council finds pursuant to City Charter section 615 that a state of local emergency exists within the City of Santa Monica as a result of the Northridge earthquake. SECTION 7. This Ordinance is declared to be an urgency measure adopted pursuant to Santa Monica city Charter section 615. It is necessary for preserving the public peace, health and safety, and the urgency for its adoption is set forth in the findings above. SECTION 11. Any provision of the Santa Monica Municipal Code or appendices thereto including emergency ordinance Number 1720, 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 8. If any section, subsection, sentence, clause, or phrase of this Ordinance is for any reason held to be invalid or 6 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 9. The Mayor shall sign and the City Clerk shall attest to the passage of this Ordinance. The City Clerk shall cause the same to be published once in the official newspaper within 15 days after its adoption. APPROVED AS TO FORM: 7 Adopted and approved this 22nd day of February, 1994. ~ ftJ,b M r I hereby certify that the foregoing Ordinance No. 1729 (CCS) was duly and regularly introduced at a meeting of the City Council on the 22nd day of February, 1994; that the said Ordinance was thereafter duly adopted at a meeting of the City Council on the 22nd day of February, 1994 by the following Council vote: Ayes: Councilmembers: Abdo, Genser, Greenberg, Holbrook, Olsen, Rosenstein, Vazquez Noes: Councilmembers: None Abstain: Councilmembers: None Absent: Councilmembers: None ATTEST: ,/I 'U -{:///~j / / / ~/0~Vt!~ 6. M!U~ City Clerk