Designs have been released for the largest mass timber office building in North America. The structure is part of an 11-ha (28-acre) Pier 70 waterfront development at a historic shipyard property in San Francisco, California.
Designed by Hacker Architects (Portland, Oregon), the 28,800-m2 (310,000-sf), mid-rise building will be 26-m (85-ft) tall with six floors. Laura Crescimano, co-founder of SITELAB Urban Studio, is the lead urban designer of the waterfront development.
The structure will be the first ground-up office built at Pier 70, where construction is underway on a $3.5 billion waterfront neighborhood with housing, offices, parks, and space for artists and local manufacturing, and rehabilitated historic buildings. The mass timber building will serve as a signature gateway structure on the site’s northern side.
The building will feature cross-laminated timber (CLT) floor slabs, glue-laminated (glulam) timber columns and beams, steel lateral seismic framing, and metal cladding.
The building’s interior will feature one- and two-story ceiling heights and windows ranging from 4 to 8.5 m (14 to 28 ft), using 686-mm (27-in.) exposed wood beams.
The building’s exterior will include a palette of metal panels finished to appear as raw weathering steel as a reference to the site’s ship building history and adjacent industrial buildings. The dark metal shell will serve as a sharp contrast to the wood interior seen from the street. At the pedestrian level, double-height notches with living walls will be set in rhythm to nearby building patterns. In addition to offices, the property will include a retailer, restaurant, and bike lounge at ground level.
Design approvals for the Pier 70 timber office building are underway, pending approvals by the Port of San Francisco and the City. Construction is targeted to begin in spring 2020 and to be completed within two years.