Introduction
Bullitt Center is a six-story office building with one level of below-grade parking in Seattle, WA designed by Miller Hull and built by Schuchart Construction. The project owner and designer meet the goals of the Living Building Challenge,™ a rigorous building certification program for sustainable design and construction. The building was designed to produce as much electricity as it uses plus supply and treat all of its own water, capturing rainwater in a56,000-gallon tank. The structure is designed to be self-sufficient, with a life expectancy of 250 years (versus a 40-year life span typically used in appraising commercial buildings).
Structure:
office, education facilities and below grade parking
Applications:
perimeter shotcrete walls, water tanks, and elevator pits
Architect:
Miller Hull
Engineer:
PAE Consulting Engineers
General Contractor:
Schuchart Construction
Owner - Developer:
Bullitt Center Foundation
Ready Mix Provider:
Cadman
Product Type:
Hycrete360
Challenge
The below-grade parking level is in the water table and required a warranted solution, capable of protecting the garage from water infiltration and damage. As a part of the Living Building Challenge,™ it is also important that the solution contributed to the environmental goals of the project, including using materials that are not hazardous. In order to achieve a 250-year building life, the designer required a solution proven to provide long-term protection that would reduce required maintenance over the building’s life.
Solution
Miller Hull selected Hycrete to waterproof the below-grade walls, water tank, and elevator pits because Hycrete provides superior waterproofing protection. Hycrete’s solutions provide protection in the concrete and are as durable as the concrete itself. Hycrete’s waterproofing solution is backed by an industry-leading performance warranty and was used in conjunction with a waterproofing membrane. In addition, Hycrete’s admixtures are Cradle to Cradle Challenge™ Gold and safe for use in potable water tanks – critical for the long-term reuse of water in the building.
Result
Bullitt Center is water-tight and backed by a Hycrete waterproofing performance warranty. And by using Hycrete, the project owners were able to pursue the objectives of the Living Building Challenge™. The Bullitt Center is now widely considered the greenest office building in the world. The project was completed in 2013.
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