855 Brannan

The building comprises a one-level concrete podium and five wood-framed stories. SGH assisted with selecting and designing roofing; podium, balcony, and parking garage waterproofing; cement plaster finishes; galvanized and steel rain screen wall panels; cement fiber composite panels; expansion joints; and window assemblies. Highlights of our work include the following:

• Reviewed the building enclosure design and recommended air barrier, waterproofing, and roofing systems as basis of design
• Developed details for the roofing, cement plaster, storefront and windows, and horizontal waterproofing systems, and for integrating the various systems
• Developed three-dimensional models of complex expansion joint transitions, window flashings, and transition flashings between the various cladding systems
• Established performance criteria and field testing requirements included in the project specifications
• Provided construction administration services, including reviewing contractor submittals, attending construction meetings to coordinate installations, observing window and flashing mockups and ongoing construction to compare with the design intent, witnessing plaza flood testing and water testing of the storefront/punched windows, and helping the contractor resolve field conditions by providing construction sketches as needed