350 Bush Street

SGH consulted on the design of waterproofing at terraces and plazas, and roofing. Highlights of our work include the following:

• Helped select roofing and waterproofing systems, including a new metal roof for the Mining Exchange
• Reviewed the proposed design and recommended ways to improve performance
• Developed details to integrate the roofing and waterproofing with other enclosure systems
• Provided construction administration services, including reviewing submittals and observing ongoing construction

At the Mining Exchange, SGH designed new structural steel anchorage to attach new terra-cotta acroterion and anthemion pieces to the roof structure. Highlights of our work include the following:

• Evaluated the stacked acroterion terra-cotta and detailed steel frames to fit within the assemblies
• Designed a system to connect the hollow terra-cotta acroterion blocks to the frames, and anchor the frames and anthemion blocks to the existing roof structure
• Coordinated the roof anchorage and terra-cotta installation with the roofing
• Provided construction administration services, including reviewing terra-cotta and anchorage shop drawings, observing ongoing construction, and assisting the contractor during installation