Welch Company; Communication Metrics

Gensler/Michael Willis/Kwan Henmi
600 California Street, Floor 1100
San Francisco, CA 94108




October 8, 1998                                                                     03 96060 60 98100802


Prepared by:  Clonia Cautis


Subject:  Moscone Center Expansion Project - Phase III
                 Project Number:  01.6250.000
                 Structural Coordination Meeting, Oct 8, 1998
                 Meeting Notes..... #67

Present

FBA....................... Hamid Fatehi
FBA....................... Alain Placido
SDE....................... Jack Laws (JL)
SDE,,,,,,,,,,,,,,,,,,,,,,, Jon Andrews (JA)
JV Team/Gensler........... Clonia Cautis (CC)
JV Team/MWA............... Steven Hergert (SH)
JV Team/KHA............... Ivan Romero (IR)
JV Team/KHA............... Rod Welch (RW)

Discussion

CC supplied linear foot calculations of moveable walls for SDE. (Print provided)
Action / Decisions Pending / Follow up

SDE to calculate weight for wall pockets.
FBA requested push-pull information for the pre-cast panels from the JV team.
Action / Decisions Pending / Follow up

JV team to provide.
CC requested a response to earlier memo regarding the design loads of slabs.
Action / Decisions Pending / Follow up

SDE will provide design load of slab criteria in a memo.
CC requested FBA and SDE review of all architectural sheets, particularly A5.31 - A5.33 (window wall details).
Action / Decisions Pending / Follow up

FBA and SDE to review and provide red-line mark-ups.
CC requested structural sections at the 4th and Howard corner plaza in two directions.
Action / Decisions Pending / Follow up

JV team to provide outline section information that we currently have.
Progress plots (half size) are requested in JV office by noon next Thursday, October 15, for the 50% exterior package.
To be considered a progress printing only
Action / Decisions Pending / Follow up

Plots needed of revised sheets only.

Issues still pending:

JV team requested clarification on building movement at the property line at the existing mechanical building.
Action / Decisions Pending / Follow up

Jon forwarded information to JV team via phone call to SH.
SH to develop memorandum illustrating building movement for submission and approval by SDE

Penetrations (for mechanical ducts) through structure at Brace line B were discussed. A&P confirmed (via phone conversation with IR during meeting) that 2'- 11" clear is not sufficient space for their ducts. SDE will lower bottom members of engaged trusses 6" min.
Issue being finalized by A&P. Alan currently coordinating/verifying.
(10/8) A&P verbally verified coordination. Drawings still requested.
Action / Decisions Pending / Follow up

SDE lowering steel 6".
JV team to incorporate revisions.
JV team notified A&P of steel modification.
A&P will verify if penetrations are sufficient.

All parties discussed framing concepts for the Howard Street entry plaza.
SDE suggests extending basement walls to perimeter of plaza stairs.
After additional discussion at the September 24 meeting, this option was agreed upon by all parties.
At 10/1/98 meeting, SDE and FBA still coordinating.
(10/8) SDE and FBA will show progress at next printing: 10/15/98
Action / Decisions Pending / Follow up

Base files were modified and distributed by JV team.

Drawings of existing buildings were requested for SDE and FBA.
Additional drawings from the city will be sent by JV team when located and forwarded by city.
Action / Decisions Pending / Follow up

JV team provided copies of what we currently have on file.

Elevator shaft / elevator machine room framing to be resolved this week.
CC requested steel framing member and column sizes (at elevators)and sketches from SDE by the end of the week.
Sizes still being coordinated. JV drawings to be modified to incorporate structure.
Action / Decisions Pending / Follow up

JV team to meet with Al Williams 9/18/98. Information to be provided to SDE/FBA. Sketches to be provided by SDE late 9/18.
KH team to resolve by 10/12.

Stair sections incorporating structure, verifying head clearances, and locating railing to be done by JV team (KHA) and forwarded to FBA and SDE.
KH to provide sections for Howard street by 10/9.
Action / Decisions Pending / Follow up

JV team to complete. (KHA)
Still pending.

JV team showed SDE ceiling hook location options.
All hooks on 11'-3" grid to coordinate with main structural elements.
Action / Decisions Pending / Follow up

JV team to send electronic files of ceiling drawings to SDE.

JV team and SDE reviewed framing at mechanical shafts on Minna Street. SDE would like to relocate framing to grid lines or slightly off center (within the flange of the column).
Still pending at 10/1/meeting: "in progress" stair and louver study will determine framing location.
Action / Decisions Pending / Follow up

JV team will study stair and shaft layout further.
Direction on framing to be provided to SDE as soon as possible.

With Paoletti present, SDE and JV team verified the thickened slab is required over the chiller room for sound dampening.
Electrical floor boxes, currently sheet metal should be concrete, similar to plumbing boxes
Thickened slab issue not resolved. Verification of required weight, with Paoletti, still to occur.(150 vs. 75 psf.)
CC sent letter to RJA for code/fire rating interpretation.
(10/8 meeting): CC and JA to resolve slab thickness with Paoletti
Action / Decisions Pending / Follow up

SDE to confirm if concrete floor box enclosures possible.
SDE confirmed 10/1. Detail to be provided.
SDE suggested at 10/8 meeting that slab thickness shown currently in design may be in excess of what is required.

CC recommends suspended elevator pits to be concrete.
Action / Decisions Pending / Follow up

SDE to note in design and JV team to incorporate into plans and sections.
Still to be incorporated.

FBA provided a detail illustrating the transition between the sandwich slab and the composite mat and topping slab.
JV team will create plan diagram showing extent of sandwich slab vs. composite slab.
Above information to be used in generating a cost study of the proposed alternate.
(10/1 meeting: CC will forward to Hanscomb.)
(10/8 meeting: waiting for response from Hanscomb)
Action / Decisions Pending / Follow up

FBA suggested a reduction in the 2'-6" rock section as a reduction alternate in lieu of eliminating the rock entirely.
JV team will study options.
Issue still pending. JV team to illustrate scope of "stepping" required with option

FBA proposed options for clarifying the support of the north pre-function window wall. Connections between the window wall frame and the gravity column will be slotted.
Coordination still pending.
PS to detail enclosure and connections.
Action / Decisions Pending / Follow up

JV team confirmed the column and the window wall support steel connection will be clad/covered.
Details to be provided y JV team.

Currently there is no direction structurally for the exterior wall near the existing mechanical building.
JV team provided scheme for enclosure in 25% documents.
JV team requested FBA review of this detail.
Action / Decisions Pending / Follow up

JV team to study and provide direction.

Thermal expansion, related to the 100 degree figures provided by A&P, would translate to 2 Ť" of building "expansion" over the full width of the building (along 4th Street).
FBA recommends thermal joints where structural systems change.
Due to refinement in "installation time" and temperature controls, FBA does not believe additional expansion will need to be designed into the glazing.
The structure is able to handle the expansion (1 Ź").
Action / Decisions Pending / Follow up

JV team recommends a second look at the 100 degree figure by A&P.
JV team will consider recommendation and respond.
FBA to confirm 100 degree variation. (94 degree variation in EXPOSED conditions only.)
JV team requested clarification on temp range when enclosed and non- conditioned.

JV team to provide SDE with proposed damper relocations for SDE incorporation.
Proposal provided.
Action / Decisions Pending / Follow up

SDE incorporating revisions.
JV team to provide additional direction at grid lines A, 1, and 6.

Interior issues still pending:

Elevator framing was discussed. SDE confirmed framing diagrams had been sent to JV team.
JV team requested modifications to steel tube sizes.
KH team to provide sections and backgrounds to go to consultants 10/19/98.
Action / Decisions Pending / Follow up

SDE will reissue faxes sent prior.
SDE confirmed requested tube dimensions are not feasible.
SDE will provide possible sizes for IR/JV team.

CC requested coordination between FBA and SDE for column locations in the basement.
FBA and SDE have coordinated. Electrical engineering coordination (associated with NW corner electrical room) still pending.
KH team to complete by 10/5/98.
Action / Decisions Pending / Follow up

FBA and SDE to coordinate.
New drawings were issued at 25% (September 30) deadline.

Elevator shaft / elevator machine room framing to be resolved this week.
CC requested steel framing member and column sizes (at elevators)and sketches from SDE by the end of the week.
Sizes still being coordinated.
JV drawings to be modified to incorporate structure.
Action / Decisions Pending / Follow up

JV team to meet with Al Williams 9/18/98.
Information to be provided to SDE/FBA.
Sketches to be provided by SDE late 9/18.
KH team to resolve by 10/12.

Stair sections incorporating structure, verifying head clearances, and locating railing to be done by JV team (KHA) and forwarded to FBA and SDE.
KH to provide sections for Howard street by 10/9.
Action / Decisions Pending / Follow up

JV team to complete. (KHA)
Still pending.

JV team showed SDE ceiling hook location options.
All hooks on 11'-3" grid to coordinate with main structural elements.
Action / Decisions Pending / Follow up

JV team to send electronic files of ceiling drawings to SDE.

JV team and SDE reviewed framing at mechanical shafts on Minna Street. SDE would like to relocate framing to grid lines or slightly off center (within the flange of the column).
Still pending at 10/1/meeting: "in progress " stair and louver study will determine framing location.
Action / Decisions Pending / Follow up

JV team will study stair and shaft layout further. Direction on framing to be provided to SDE as soon as possible.

CC recommends suspended elevator pits to be concrete.
Action / Decisions Pending / Follow up

SDE to note in design and JV team to incorporate into plans and sections.
Still to be incorporated.