March Lunch – Rainier Square’s Innovative Structure

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March Lunch – Rainier Square’s Innovative Structure

March 19 @ 11:30 am - 1:00 pm


 Join us for a presentation by Brian Morgen (Principal at Magnusson Klemencic Associates) on one of Seattle’s newest and most innovative high-rise structures.  The new 58-story Rainer Square Tower will be the second-tallest building in Seattle and the tallest building built since 1985.

The 1.4-million-square-foot Rainier Square Tower forgoes a typical high-rise reinforced concrete core design, which wraps a steel frame around a concrete core reinforced with steel rebar reinforcing.  Instead, the project utilizes a modular system of steel plates sandwiched with concrete.  The system consists of pre-fabricated core modules with two steel plates that serve the reinforcing steel for the core.  Upon delivery to the site, the cross-tied plates are moved into position, spliced together, and infilled with concrete on-site. This is the first use of this new system, called Concrete-filled, Composite Plate Shear Wall (CF-CPSW) core, in the United States in a high-rise building, and the first in the world to be used in a high-seismic zone.  The new “sandwich panel system” — a steel /concrete composite core wall — is expected to shave 9 months off the construction schedule.  The new sweeping and glass-clad structure is designed by NBBJ and represents a unique and innovative design that will occupy a prominent place in Seattle’s skyline.

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March 19
11:30 am - 1:00 pm


Belden Club


Seattle Yacht Club
1807 E Hamlin St.
Seattle, WA 98112 United States
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