Redwood City, CA

Crossing 900

Scope/Solutions
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Project Summary

Scope/Solutions

Adjacent to the Redwood City Caltrain station, Crossing 900 includes two mid-rise office buildings sharing a landscaped podium over retail space and below-grade parking. The Level 4 podium connects the two towers, which are seismically separated with an expansion joint at each above-grade level up to the podium level. SGH was the designer of record for roofing and waterproofing systems.

SGH designed below-grade waterproofing, podium waterproofing, and low-slope roofing. Highlights of our work include the following:

Established performance criteria for the roofing, waterproofing, and expansion joint systems
Collaborated with the design team to coordinate the structural slab, landscaping, and drainage for the podium
Designed typical details for the roofing and waterproofing systems and developed details to integrate roofing and waterproofing systems with other enclosure systems
Designed the waterproofing system for the seismic expansion joint at the podium to accommodate movement up to 8 in.
Coordinated the expansion joint design with landscape finishes to make it as inconspicuous as possible
Assisted the project team with value engineering evaluations of concrete placement methods for below-grade walls
Provided construction administration services, including reviewing related submittals, responding to contractor requests for information, and visiting the site to perform special warranty inspections and observe as-built construction to compare with the design intent