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Project Riverboat

Scope: Rooftop pyramid on the on fourth tallest high-rise building in Charlotte, NC, with exposed structural steel and a white ETFE sail fitted to the inner face. The entire pyramid had to be statically determinate which, along with high wind loads, called for relatively massive sliding bearings.
Country: USA
Client: Birdair, Inc.
Architect: HKS, Inc.
Size: 80 tonnes of steel, 1450 m2 of ETFE
Photo: Birdair, Inc.
Partner: LEICHT
One of many structural joints, vertical pipe diameter 16" (406mm)
Sliding bearings, restrained in one direction
Finished rooftop pyramid