SR 04-26-2016 3J
City Council
Report
City Council Meeting: April 26, 2016
Agenda Item: 3.J
To: Mayor and City Council
From: Martin Pastucha, Director, Public Works, Civil Engineering
Subject: First Modification for the Parking Structure Condition Assessment, Testing,
Analysis and Repair Services for Parking Structures 2, 4, 5, 9 and 10.
Recommended Action
Staff recommends that the City Council authorize the City Manager to negotiate and
execute a first modification to professional services agreement #10148 (CCS) in the
amount of $198,950 (including a 15% contingency) with Walter P. Moore and
Associates, Inc., a California-based company, for the development of construction
documentation for Parking Structures 2, 4, 5, 9 and 10 and for the development of a
detailed structural engineering assessment involving testing, analysis and construction
documentation for repairs at Parking Structure 1. This will result in a one year amended
agreement with a new total amount not to exceed $354,950 (including a 15%
contingency), with future year funding contingent on Council budget approval.
Executive Summary
functionality are an essential service provided by the City. A key component in assuring
this service is the development of a systematic and robust maintenance and repair plan
for structures that have shown or have the potential of experiencing degrees of
structural distress that could cause future impacts and long term safety and functionality
issues. The City identified parking structures 2, 4, 5, 9 and 10 as candidates for
assessment and analysis. Other parking structures such as 1, 3, 6, 7, 8, and Civic
Center are not included in the assessment and analysis for various reasons. Alternate
uses are being considered for parking structure 1 and 3, while parking structure 7 and 8
are maintained by Macerich Company at Santa Monica mall. Parking structure 6 and
Civic Center are new structures.
Walter P. Moore and Associates, Inc. (the Consultant) has provided the City with
condition assessments, evaluations and preliminary costs of repairs for each of these
structures. With the scope of repairs identified, the Consultant has provided the City
with a cost to develop construction documentation for these repairs.
On March 8, 2016, concrete spalls fell from the second floor slab in Parking Structure 1.
An initial investigation of the floor slab necessitated the installation of temporary slab
supports and requires an immediate structural engineering assessment involving
testing, analysis, and construction documentation for permanent repairs.
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Staff recommends that Council approve a first modification in an amount not to exceed
$198,950 to professional services agreement with Walter P. Moore and Associates,
Inc., to develop construction documentation for repair of parking structures 2, 4, 5, 9,
and 10 and additional engineering assessment, testing, analysis and construction
documentation for repairs at parking structure 1 in an amount not to exceed $354,950
(includes a 15% contingency)
.
Background
Parking Structures 2, 4, 5, 9 and 10
The original parking structures 2, 4 and 5 were constructed in the 1960s. Parking
structures 4 and 5 were originally built as five-story structures with the upper four-story
additions completed later in the 1970s and 1980s, respectively. Parking structures 2, 4
and 5 were seismically upgraded in 2010, 2009 and 2005, as these structures
experienced some degree of damage after the 1994 Northridge earthquake. Parking
structure 9, built in 2001, and parking structure 10, built in the 1980s, were built as three
and two-level structures, with housing constructed on top of each.
In 2009, severe concrete spalling occurred at one of the downtown parking structures
prompting the City to inspect all City owned parking structures. Multiple spalling
locations were identified and subsequently repaired. Additionally, many slabs depicted
various types of cracking which over time, may result in moisture intrusion and cause
long term corrosion in the structural slabs.
On July 28, 2015, the City Council authorized executing a professional services
agreement with Walter P. Moore and Associates, Inc., in an amount not to exceed
$156,000 (including a 15% contingency) to conduct engineering assessment, testing,
analysis and repair for Parking Structures 2, 4, 5, 9, and 10, per Attachment A. Initially,
Parking Structure 1 was not considered for engineering assessment, testing, analysis,
for an alternative use.
Discussion
On October 9, 2015, the City and Consultant entered into a professional services
agreement. As part of the original scope of work in the RFP, the City suggested a four-
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phase approach to the project which consisted of the following:
Phase 1
- Condition Assessment Survey and Chemical and Physical Testing Program
- including document review, field assessment and development of a testing
program.
Phase 2
- Laboratory Testing and Inspections included field testing and laboratory
analysis.
Phase 3
- Evaluation Report and Recommendations included compiling field data
and prioritizing final repair and maintenance programs on a high, medium and low
scale. Also included cost estimates for the repairs.
Phase 4
- Construction Documents, Construction Engineering, Administration & Closeout
During the RFP process, it was determined that a realistic scope and cost proposal for
phase 4 could not be determined with accuracy without first preparing the final repair
and maintenance program scope developed in phase 3. Currently, Phases 1 through 3
have been performed by the Consultant which provides a clear understanding of the
additional required time and effort needed to develop and complete construction
documentation as part of Phase 4.
Parking Structure 1 Structural Issues
th
Parking Structure 1 is located at 1234 4Street and is a 5-story parking structure built in
1968. On March 8, 2016, two large pieces of concrete fell from the bottom of the second
level slab and onto the City of Santa Monica Promenade Maintenance Office, located
on the ground level of Parking Structure 1.
Staff directed the Consultant to assess the situation immediately.
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During the visual assessment, the Consultant noticed structural deficiencies in the
concrete slab just above the Promenade Maintenance office. Due to the severity of the
deficiencies near the office, the Consultant recommended installation of emergency
temporary shoring of the second level slab in the affected area in order to safely
stabilize the area, per Attachment B.
After a preliminary evaluation of the entire structure, the Consultant noted that Parking
following recommendations were developed by the Consultant in order to completely
assess the condition of the structure and determine the extent of the damage and
develop an effective repair strategy:
Detailed structural assessment and analysis of the entire structure.
Develop and implement a repair program for immediate and high priority items in
order to stabilize the structure and keep it in operation.
Implement a long term maintenance plan for the structure.
Because of the immediate attention needed to evaluate and rectify these issues, staff
recommends adding this additional scope and fee as part of the first modification to
professional services agreement #10148 with Walter P. Moore and Associates, Inc.
Consultant Selection
On April 8, 2015, the City published a Request for Proposal (RFP) #SP2373 for Parking
Structure Condition Assessment, Testing, Analysis and Repair Services for Parking
Structures 2, 4, 5, 9 and 10. -line bidding site, and
notices were advertised in the Santa Monica Daily Press in accordance with City
Charter and Municipal Code provisions. Eight firms responded. Walter P. Moore and
Associates, Inc. ranked highest among the eight firms. Walter P. Moore and
Associates, Inc. demonstrated extensive knowledge and experience on numerous
projects similar in nature.
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Financial Impacts & Budget Actions
The agreement modification to be awarded to Walter P. Moore and Associates, Inc. is
for an amount not to exceed $198,950 (includes a 15% contingency) for an amended
agreement total not to exceed $354,950 (includes a 15% contingency). Funds in the
amount of $198,950 are available in the FY 2015-16 Capital Improvement Program. The
agreement modification will be charged to the following accounts:
Account Number Description Amount
C019053.589000 Parking Structure Seal $88,964
M019054.589000 Maintenance for Parking Structures and Lots $109,986
TOTAL $198,950
Future year funding is contingent on Council budget approval.
Prepared By:
Joshua Carvalho, Civil Engineer
Approved Forwarded to Council
Attachments:
A. July 28, 2015 Staff Report
B. Photos of Structural Issues and Temporary Shoring
C. Written comments
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March 11, 2016
PS1 Emergency Post-Tensioning and Spall Review
Walter P Moore Project No. D09.15010.01
Page 4 of 8
PHOTOGRAPHS
1
2
3
4
Photo 1: Spalled areas and exposed tendons below exit Photo 2: Ruptured tendon 1
ramp
Photo 3: Corroded and ruptured tendon 2 Photo 4: Severely corroded and ruptured tendon 3
Photo 5: Severe corrosion on tendon 4 Photo 6: Exposed corroded tendon and spalled concrete on the
roof level
March 11, 2016
PS1 Emergency Post-Tensioning and Spall Review
Walter P Moore Project No. D09.15010.01
Page 5 of 8
PHOTOGRAPHS
Photo 7: Spalled area on the roof possible corroded tendon Photo 8: Spalled area in the ceiling below level 2
Photo 9: Clogged drain and ponding on level 1 Photo 10: View of installed shoring
Photo 11: Shored area near tendon rupture Photo 12: Shore installed at pedestrian ramp
March 11, 2016
PS1 Emergency Post-Tensioning and Spall Review
Walter P Moore Project No. D09.15010.01
Page 6 of 8
PHOTOGRAPHS
Photo 13: Shoring in the lunch room area Photo 14: Shoring in the office space/lunch room
Add to 3-J
04/26/2016
Vernice Hankins
From:Mary Marlow <m.marlow@verizon.net>
Sent:Monday, April 25, 2016 3:44 PM
To:Council Mailbox; council Items
Cc:Rick Cole; Andy Agle
Subject:April 26 Agenda Item 3J
Dear Mayor and Council Members,
First Modification for the Parking Structure Condition Assessment, Testing, Analysis and Repair Services for
Parking Structures 2, 4, 5, 9 and 10.
I am concerned about item 3 J on the consent calendar that excludes Parking Structures 1 & 3 from an
assessment of condition and an estimate of the cost to repair. The report states that parking structures ! & 3 are
excluded because alternate uses are being considered.Without assessment of condition and estimated cost to
make repairs, there is no way to make any financial comparison with an alternate use. This is especially true for
structure 3 as an Arclight Theater is proposed to replace it. As I recall, one of you asked about the cost to repair
structure 3 and Andy Agle guessed at a number. Please include structure 3 in the contract With Walter P.
Moore Associates for full transparency on costs and alternatives.
Thank you,
Mary Marlow
1
Reference:
Modified
Agreement
No.
10148(CCS)