Google Bay View Campus
Mountain View, Calif.
General Contractor: Whiting-Turner
Erection Engineer | Heavy Lift Engineer: Thornton Tomasetti
Fabricator and Erector: Schuff Steel Co.
Subcontractors: Bigge Crane and Rigging Co.; BDS VirCon; Enerpac; Ruby + Associates; Hassett & Associates
A new Google campus was designed with a sweeping canopy roof, which set a Western Hemisphere record for the largest number of strand-jacks used at one time in hoisting the roof assembly. The project team spent two years designing and planning the execution of three separate long-span canopy roof lifts. The largest of those combined 12 large bays of pre-assembled roof framing connected by 32 long-span trusses, covering a footprint of nearly 500 ft by 500 ft at its widest spot.
This same roof lift used 42 individual strand-jacks synchronized and arranged in pairs set on 21 primary support columns for the canopy. The jack system worked in unison to support and raise the complex roof assembly, which weighed in at more than 2,600 tons of static load. The biggest single-hoisted assemblies included more than 180,000 sq ft of roof structure.