Gensler, Michael Willis, Kwan Henmi

Moscone Center Expansion Phase III

600 California Street

San Francisco, California 94108

415 433 3700





November 6, 1998                                                                     03 96060 61 98110502



Mr. Ivan Romero, AIA
Project Architect
Kwan Henmi Architects
Interior Design/Documentation
Gensler/Michael Willis/Kwan Henmi
600 California Street, Floor 1100
San Francisco, CA  94108

Subject:  Moscone Expansion Phase III; Number:  01.6250.000
                Structural Meeting, 981022
 

Dear Ivan,


This summarizes the discussions regarding Elevator 7 & 8.  (Refer to Facsimile
Transmittal dated 10-19-98 for related sketches.)







    

       
  1.  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.
      
    
      
  2.  SDE revised from tube steel to wide flange column configurations at
      elevator support rails intersecting column line 4.3 and has confirmed
      with FBA.
      
    
      
  3.  SDE revised elevator Machine Room level and Penthouse floor framing plans
      and has confirmed with FBA.
      
    
      
  4.  Penthouse structural floor plan to become similar to 2nd & 3rd floor
      structural plan to accommodate HVAC shaft opening.
      
    
      
  5.  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.
      
    
      
  6.  Confirmed intermediate horizontal support I-beams necessary between 1st
      & 2nd and 2nd & 3rd floors to stabilize shaft walls and elevator rail
      support spans.
      
    
      
  7.  KH provided sketches regarding access to fire dampers and fan coil unit
      at catwalk through an access panel and short ladder adjacent to Machine
      room stairway.  SDE will develop framing for support of catwalk platform.
      
    
      
  8.  Clonia Cautis expressed concern regarding 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.
      
    
      
  9.  The 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.

    

       
  10.  Confirmed with SDE that they will coordinate with FBA on issues regarding
      elevator rail supports.



   


Sincerely,


Gensler, Michael Willis, Kwan Henmi

Kwan Henmi Architects




Philip Buscemi

Architect