LEED Gold Certification for 1101 Second Avenue

Date Posted: 03.17.2017

1101 Second Avenue has received LEED for Core and Shell Development Gold certification from the U.S. Green Building Council (USGBC). The extensive renovation renews an iconic mid-century modern building in Seattle’s downtown through innovative structural design, strategic exterior upgrades and sustainable systems.

Preserving Structural Bones
The renovation highlights and accentuates the structural framework of the 80,000 square-foot building originally designed by Paul Thiry, a pioneer of Northwest Modernism. Strategic placement of shear walls and exterior modifications preserve the openness and flexibility created by the building’s unique combination of multi-story precast concrete columns with two-way concrete ‘waffle’ slabs.

New Envelope and Building Systems
High operational energy use is typically the weak point of older structures, as was the case with this building. The effort included a complete envelope and mechanical system overhaul: all new windows, robust insulation of exterior walls and roof, and a highly efficient and flexible variable refrigerant flow (VRF) mechanical system.

Increasing Daylight and Views
By bringing the exterior windows closer to the edge of the former balconies, the renovation improves daylight penetration into work areas. Introduction of operable windows also allows building tenants to have greater control over their work spaces and saves energy during long periods of mild weather.

Inspiring Sustainable Behavior
To encourage biking, the project includes ample bike parking with lockers and showers. All restrooms and showers are outfitted with low flow plumbing fixtures.