Department of Building Inspection

Structural Subcommittee


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CODE ADVISORY COMMITTEE
 
Regular Meeting of the
Structural Subcommittee
 

DATE:

November 8, 2005 (Tuesday)

 

TIME:

9 a.m. to 11 a.m.

 

LOCATION:

1775 Mission St.

 

 

This Subcommittee meets regularly on the second Tuesday of each month at 1660 Mission St., Room 2031. (DBI Office).  If you wish to be placed on a mailing list for agendas, please call (415) 558-6205.

Note:

Public comment is welcome and will be heard during each agenda item. Reference documents relating to agenda are available for review at the 1650 Mission Street, Suite 302.  For information, please call David Leung at (415) 558-6033.


Draft MINUTES

Present:
Ned Fennie, A.I.A.
Michael Fretz, S.E.


Other Present:
Laurence Kornfield, DBI
Sig Freeman, S.E.,  WJE
Pat Buscovich, PBASE
Homer Yim, Simpson Strongtie Co.
Ephraim Hirsch, BIC
Henry Karnilowicz, Occidental Express
John Bollard, SF Garage Co.,
Paul Saarman, Saarman Construction
Gary Bell
Joe Zsutty, Zsutty Consulting Engineers
 


 

Absent:
 
Jim Guthrie, S.E.



Hanson Tom, DBI
Willy Yau, DBI
Chris Baily, DBI
Ray Lui, DBI
Simon Tam, DBI
Lou Aurea, DBI
Kirk Means, DBI
David Leung, DBI
 

1.0

Call to Order and Roll Call
Members: Jim Guthrie, S.E.; Chair; Ned Fennie, AIA; Michael Fretz, S.E.

Meeting was called to order at 9:15 a.m.  Quorum established with 2 members present.

2.0

Review of Garage Door Structural Improvement project at project test site, 1775 Mission Street.

The garage door reinforcement project  was reviewed. A working model garage door had been assembled.  Ideas for how to reinforce garage doors to improve seismic safety, allowance for inexpensive and easy upgrade installation ownership issues, connections, pivot device that slides a bolt as the door hits the grade, wood backing to the metal track, prevention of uplift under load and basic test procedure and equipment were discussed.

3.0

Approval of the minutes of the Structural Subcommittee Special meeting of May 13, 2005.                                      


A motion to approve the minutes.  Seconded and approved.

4.0

Discussion and possible action on the draft Administrative Bulletin    on Criteria and Evaluation Procedures for Structural and Nonstructural Performance-Based Designs.    

 

The draft administrative bulletin was discussed. Ground motion uncertainties, etc. require alternate designs to provide high degree of confidence. Quality control may include setting up of inspection schedule, ease of monitoring and trackability.

On page 9, clarification of sufficient redundancy is discussed.

It is brought up that redundancy is not necessarily a good thing, e.g. steel moment frame.

On page 12, serviceability (after the earthquake) is discussed.

 

5.0

Discussion and possible action on consideration of a draft policy regarding building  collapse hazards.

A motion to adopt the draft policy and move it to the full committee.  Seconded and approved

 

6.0

Items 2.0 and 4.0 are continued in next  meeting

 

7.0

Public Comment

No public comment.


8.0

Adjournment.

The meeting was adjourned at 11:30 a.m.