The Seattle Storm Center for Basketball Performance

Location: Seattle, Washington

Award: Lower Carbon Concrete

Project Team

Owner: Force 10 Sports Management

Contractor: Sellen Construction

Structural Engineer: Holmes US

Architects: ZGF Architects LLP and Shive-Hattery

Concrete: Stoneway Concrete

Slag Cement: Holcim

This project in Seattle, WA, USA, presented the construction team with many technical challenges, including the need to minimize the GWP as well as achieve LEED® Gold certification. Sellen Construction had placed concrete with a cement comprising 80% slag cement on a previous project and was aware that it produced a very light color after curing. The contractor therefore worked with Stoneway Concrete to use slag cement to produce the tilt-up wall panels for this project. In addition to maximizing slag cement content and using ASTM C595/C595M Type IL cement for various applications on the job, the design and construction team worked collaboratively to identify areas, like foundations and tilt-up walls, where concrete could be specified with 56-day design, rather than 28 days, further reducing the required amount of cementitious materials to achieve required strength.

Application Type

Application Type
% Slag Cement Replacement
% Portland Cement
% Portland Limestone Cement
% Other SCM (if applicable)
Aggregate
Water/cement ratio
7-day strengths
28-day strengths