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University of Washington

Hec Edmundson Pavillion Renovation, Seattle,WA

building total area

250,000 SF

completion date


total construction cost



University of Washington

a/e team

LMN Architects

Berona Mechanical Engineers

Sparling Electrical Engineers

construction team

Sellen Construction General

Holaday Parks Mechanical Contractors

D.W. Close Electrical

Johnson Controls 


project description

Originally constructed in 1927, the Hec Edmundson Pavilion underwent a major renovation. The 9,000-seat arena is home to the University of Washington Husky basketball teams. Objectives of the project were to increase seating capacity, remove interior columns for unobstructed views, and improve the ventilation systems. The functions of the building include the sports arena, concessions, practice courts, gymnastics facilities, band rooms, locker rooms, a sports medicine clinic, coaches offices, and meeting rooms.

services provided

WJC was sub-contracted by the General Contractor to provide Test Engineer services. WJC provided a commissioning plan, performed design reviews, assisted in establishing the operational basis of design, wrote/executed functional performance tests, conducted weekly commissioning meetings, and assisted in the resolution of mechanical system operational problems.

systems tested

DDC control system, 2 air-cooled chillers, 17 air handling units, 3 run-around loop heat recovery systems, 5 exhaust fans, 1 make-up air unit, 6 fan-coils, 3 unitary air conditioning units, 3 steam unit heaters, 50 duct hot water coils, 2 steam heating hot water converters, 3 steam condensate receivers, 2 steam-fired domestic water heaters, 1 arena active smoke control system, DDC/Fire Alarm System interface operation, and Seattle Fire Department fire alarm system testing.