For the existing building, SGH designed a seismic retrofit, structural modifications to add wall openings and skylights, and strengthening for existing trusses. We also designed the structure for the new addition comprising a series of 50 ft by 54 ft modules arranged around the existing warehouse in an L-shape, creating an architecturally connected but seismically separated building. Highlights of our structural design for these modules include the following:
Barrel-shaped roofs created with glued laminated framing
Concrete walls constructed with tilt-up construction at the street-facing walls to create the pillowed texture, shotcrete walls facing the existing building, and cast-in-place walls between modules
A concrete ring beam that supports the top of the concrete walls, helping to accomplish the full-module skylight and desired roof profiles without a traditional roof diaphragm
SGH also assisted the architect of record with the enclosure design, including the following:
Thermal performance and insulation strategies
Elastomeric coatings with anti-graffiti properties for exterior walls
Vertical glazing assemblies and locations where they intersect opaque walls
New roofing at the existing barrel vault roof and new addition, including polycarbonate assemblies
Sloped glazing assemblies and skylights
Expansion joints to accommodate seismic movement between structures