HomeMy WebLinkAbout19D - RFP - PLAN CHECK SRVSREQUEST FOR
COUNCIL ACTION
CITY COUNCIL MEETING DATE:
JANUARY 4, 2011
TITLE:
REQUEST FOR PROPOSALS FOR
STRUCTURAL PLAN CHECK SERVICES
CITY MANAGER
RECOMMENDED ACTION
CLERK OF COUNCIL USE ONLY:
APPROVED
? As Recommended
? As Amended
? Ordinance on 15' Reading
? Ordinance on 2nd Reading
? Implementing Resolution
? Set Public Hearing For_
CONTINUED TO
FILE NUMBER
Receive and file the Request for Proposal for Structural Plan Check services.
DISCUSSION
The Building Safety Division in December received a plan check submittal for the construction of a
37-story high rise structure located at 1001 North Broadway. After reviewing the submittal, it was
determined that special skill would still be required to plan check the structural part of this project.
The attached Scope of Work has been prepared accordingly (Exhibit 1).
FISCAL IMPACT
There is no fiscal impact associated with this action.
"y. Trevino
Executive Director
Planning and Building Agency
FH:rb
rb\reports\RFP Structural Plan Check 1001 N. Broadway
Exhibit: 1. Scope of Work
19D-1
REQUEST FOR PROPOSAL
STRUCTURAL PLAN CHECK SERVICES
1001 NORTH BROADWAY PROJECT
SCOPE OF WORK
Review and approved the structural part of the 37-story office tower at 1001 North
Broadway with deferring the following items from the first submittals: cladding,
equipment anchorage, stairs and elevators.
2. Also assuming that the building configurations, structural systems & framing for the
subject building will be identical to the 2008 drawings that NYA reviewed & approved
previously.
3. All building elements shall be redesigned as required to meet the CBC 2007 code
requirements. Among others, we list below a few of the important code changes that
may impact the subject building redesign:
a. It should be verified by the design team & the architectural plan reviewer if the code
changes triggers any occupancy category changes especially with respect to the
use of the two story atrium spaces at building entry or any other public assembly
type uses (the Building Importance factor, I, could go up).
b. The entire lateral force resisting system will need to redesigned & rechecked due to
the code change. In particular, for the 37-story tower this utilizes a dual structural
system - the R factors have been reduced in the new code. New/ different
redundancy checks, irregularity checks, modeling requirements, P-Delta checks, etc.
will need to be performed as part of the new lateral design.
c. Design needs to be updated for new code load combinations; Design of
discontinuous/ irregular elements for overstrength needs to include resistance
factors.
d. All concrete anchorage related items need to satisfy ACI 318-05 Appendix D
requirements.
e. All wind design related items will need to be redone per the new code requirements.
Wind load requirements are more involved & higher per the new code - especially for
roof elements & misc. parapets, canopies etc.
f. Steel SMRF elements & corresponding column bases/ anchorages need to be
designed per AISC 2005 Seismic Provisions.
g. Foundations need to be redesigned corresponding to new code forces &
requirements incorporating new findings on reduced punching shear capacity of
unreinforced concrete deep sections, etc
EXHIBIT 1
1901-2