M E E T I N G  N O T E S

Gensler/Michael Willis/Kwan Henmi

Project Moscone Center Expansion- Phase III Project Number 01.6250.000
Meeting Location JV Team Project Office Meeting Date October 22, 1998
Subject Structural Coordination Meeting Number

KH 981022-1


JV Team/GA
JV Team/KH
JV Team/KH
JV Team/KH
JV Team/KH
Clonia Cautis (CC)
Ivan Romero (IR)
Philip Buscemi (PB)
Michael Foegelle (MF)
Janet MacKinnon (JM)
Jon Andrews (JA)
Jack Laws (JL)

  1. CMU Wall at Entry and Exit Ramps above Kitchen

    JL advised that SDE has provided added support for the CMU wall above the Kitchen area, by adding columns, rather than thickening the beam depth. This design maintains space needed for mechanical ducts.

    JA will submit via fax a detail later today showing the depth of the beam has not changed, so that duct clearances are not changed.

  2. Elevator 7 & 8

    Goal of discussion was to incorporate elevator hoistway, HVAC shaft and Operable Partition Storage clearances with the structural requirements between column lines E.5 - F and 4 - 4.6.

    PB reviewed KH sketches transmitted via fax to SDE on 981019.

    1. SDE revised from tube steel to wide flange column configurations at elevator support rails intersecting column line 4.3 and has confirmed with FBA.

    2. SDE revised elevator Machine Room level and Penthouse floor framing plans and has confirmed with FBA.

    3. Penthouse structural floor plan to become similar to 2nd & 3rd floor structural plan to accommodate HVAC shaft opening.

    4. Suggestion of doubling number of columns around elevator hoistway was declined in favor of resizing existing columns and beams and introducing chevron bracing at all four sides of Elevator Machine level to underside of Penthouse deck.

    5. Confirmed intermediate horizontal support I-beams necessary between 1st & 2nd and 2nd & 3rd floors to stabilize shaft walls and elevator rail support spans.

    6. Reviewed access to fire dampers and fan coil unit at catwalk through an access panel and short ladder adjacent to Machine room stairway, as shown in KH sketches issued to SDE on 981019

    7. CC asked about edge of slab support where wall divides the Machine Room stairway and fire damper/fan coil unit catwalk area.

      SDE suggested that cantilevered distance of slab from Machine Room should be adequate, but will investigate additional support requirements.

    8. HVAC shaft along column line F between 4 and 4.6 has moved south forcing the removal of the Operable Partition closet at column intersection F & 5. The access to the diagonal damper braces located between 4.3 and 4.6 on the 2nd and 3rd floors has been modified to penetrate the HVAC shaft completely requiring two (2-hour) access panels and a suspended catwalk just north and parallel of column line 4.6 inside the HVAC shaft.

  3. Hang Point Layout in Exhibit Area Ceilings

    Ivan explained changing the layout for hang points to be 10' on center instead of 11' 3" on center between line 1.5 and 2 in the Exhibit areas on...

    • Ground floor
    • 2nd floor
    • 3rd floor

  4. Fireproofing Not Needed for Seismic and Subframes

    CC advised that SDE should note on the structural plans that seismic bracing and subframes for hang points do not need to be fireproofed.

  5. Elevators 3 and 4

    1. MF submits to SDE at the meeting a design package for elevators 3 and 4. 4.

    2. Reviewed cantalevered slab at south opening of elevators 3 and 4.

  6. Elevators 1 and 2

    MF requested that SDE provide dimensionally revised structural framing plans for...

    1. Machine room at elevators 1 and 2.

    2. Guide rail supports at elevators 1 and 2.

  7. Structural Dampers

    IR requested that SDE submit a conceptual detail of structural dampers.

    JA reported that SDE has submitted this detail to GWK-G.

  8. Restrooms at Elevators 5 and 6

    CC wants to avoid access panels in the GWB ceilings if possible.


    JM explained that on the ground floor restroom next to elevators 5 & 6 there is not enough space to provide an access ladder up to a catwalk to service the fire dampers of the HVAC ducts on the ground floor, as there is on the second and third.


    1. Ground Floor Access from GWB Ceiling in Women's Restroom

      Ducts on the ground floor will be brought down low enough to provide access to the fire dampers from the ceiling of the GWB ceiling in the women's restroom.

    2. Catwalk Access on 2nd and 3rd Floor

      Ducts on the second and third floor will remain close to the upper floor slab and remain a straight run into the shaft, with access to the fire damper provided by a catwalk tied into the miscellaneous steel provided for the support of the shaftwall at EL.24' AFF.

    3. Ladder in Operable Partition Enclosure Access to Catwalk

      Access to the catwalk will be through the operable partition closet 202-J, and 302-J near column grid E.5/2.3 w/an enclosed ladder up to a door at the top of the acousical wall enclosure.

  9. Elevators 5 and 6

    JM coordinated elevator framing with SDE on the void space north of elevator 5 steel framing of the elevator shaft and column grid 2.

    1. Janitors Closet, Plumbing Vents, Roof Drain Leaders

      The void space is the preferred location for the janitors closet, and will be utilized for some plumbing vents as well as possible roof drain leaders, as discussed with mechanical consultant A&P on 981021.

      Elevator consultants have verified using the void space as a janitor closet on the second and third floor.

    2. Elevator Hoistway Exhaust Duct

      Another use of this void space is the elevator hoistway exhaust duct. Venting is possible through the side of the elevator 5 shaft (at the top of the shaft) into this space to vent straight up through the penthouse to an exterior louver.

      Elevator consultants have verified this plan to use the void space for elevator hoistway exhaust space, and as janitor closet space on the second and third floor.

Action / Decisions Pending / Follow up

SDE will coordinate with FBA on elevator rail supports.

SDE will develop framing for support of catwalk platform.

SDE will investigate support requirements for cantilevered slab.

SDE will note in drawings that seismic bracing and subframes for hang points do not need to be fireproofed.

SDE will investigate additional framing requirements at elevator machine room 1 and 2.

Gensler/Michael Willis/Kwan Henmi will rely on these notes as the approved record of matters discussed and conclusions reached during this meeting unless written notice to the contrary is received by Gensler/Michael Willis/Kwan Henmi within seven calendar days of the issue date of these meeting notes.


  1. JV Team/GA, Clonia Cautis
  2. JV Team/MW, Steven Hergert
  3. JV Team/KH, Ivan Romero
  4. JV Team/KH, Robert Rudeen
  5. JV Team/KH, Philip Buscemi
  6. JV Team/KH, Michael Foegelle
  7. JV Team/KH, Janet MacKinnon
  8. SDE, Jon Andrews
  9. SDE, Jack Laws

Prepared by Ivan Romero Date Issued: 11/06/98

600 California Street     Tel: 415 433 3700
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