Conceptual Master Plan - Emeryville Center of Community Life

CONCEPTUAL DESIGN January 9, 2009
Emeryville Center of Community Life
In addition, this building will be designed to accommodate a future vertical expansion.
Typically, the building’s columns would extend approximately 4’-0” above the roof framing level.
At the time of expansion, new column extensions would be erected, then all new roof framing
members would be erected followed by metal roof decking and concrete fill at the same time
the next levels of braced frames were being installed. Upon completion of the steel erection, fitup
and bolting and welding, the perimeter light metal stud wall framing would be put in-place.
Exterior metal studs would be 6” deep x 18 gage and would be spaced at 16” on center.
5. Building No. 4: Below Grade Parking Structure
The below grade parking structure will be one level and will be directly beneath Building No.’s 5
and 6. The foot print is approximately 46,000-gsf and will be 100’ to 120’ in width by 385’ in
length. The roof framing structure of the parking structure will represent the ground floors of
Building No.’s 5 and 6. This framing level will consist of a 4-1/4” lightweight concrete fill on 18
gage metal deck which will provide a 3 hr fire rated assembly. The framing members will
consist of W18, W21 and W24 beams and girders. All framing and decking at this level will
require sprayed on fireproofing to provide either a 4 hr separation between the parking and
building occupancies. For estimating purposes, 10 psf of steel framing may be used to account
for the gravity beams, girders and columns and perimeter bent plate. An allowance should be
carried for a secondary topping slab and waterproof membrane at the exposed courtyard areas.
The foundations consist of a perimeter basement/retaining wall, slab-on-grade and shallow
spread footings. The perimeter retaining wall will be 12” and 5.5 psf of reinforcing steel may be
used for estimating purposes. In addition, the perimeter walls will require continuous back
drains and full height waterproofing and a continuous waterproofing strip such at the footing
and wall construction joint. The continuous footing below the wall will be 3’-6” wide by 2’-6”
deep and will have 4 #6 continuous bars top and bottom and #5 stirrups at 12” on center.
The slab-on-grade will be 5” thick and will be placed over a vapor barrier and a 4” layer of
crushed based aggregate. The slab will be reinforced with #4 bars at mid depth of the slab and
will be spaced at 16” on center in each direction. The slab will be constructed in a “skip bay”
fashion with a minimum of 5 construction joints running across the width of the building.
Additional soft cuts or weakened plane saw cut joints will then be required at approximately 15’
centers.
Shallow spread footings will include interior spread footings below the building columns and a
continuous strip footing below the perimeter basement wall. The typical interior spread footings
can be estimated as 11’x11’x3’ deep with #9 bars at 8” on center in each direction at the bottom
of the footing. The exterior footings will be placed integrally with the perimeter basement wall
continuous footing and will be 6’ wide by 8’ in length. These footings will require #7 bars at 8”
on center in each direction at the bottom of the footing. The stirrups from the continuous strip
footings will continue through the exterior footings and increase in width to 6’.
The lateral force resisting system will consist of the perimeter basement/retaining walls and 4
bays of interior 14” concrete shear walls in the transverse direction and for estimating purposes,
Outline Specifications- 13