Using Hycrete360 proved to be the most cost effective way to waterproof the structure. Hycrete was chosen because it did not have any negative effects on the workers placing the concrete and there were no environmental concerns associated with its use.
JACK AVERY,
SENIOR VP, DIRECTOR OF CONSTRUCTION SELLEN CONSTRUCTION
Introduction
HYCRETE360 PROVIDES SUSTAINABLE LONG-TERM CONCRETE PROTECTION
U.W. Medicine Phase II consists of two five story laboratory buildings and one five story office building. The buildings are above three floors of below-grade parking and located in the South Lake Union District in downtown Seattle.
Structure:
2 Lab Buildings, 1 Office Building, and Below Grade Parking
Applications:
Foundation Walls, Structural Slab, Fire Suppression Tank, Temporary Roof, Elevator Pits
Architect:
Perkins + Will
Engineer:
MKA
General Contractor:
Sellen Construction
Owner - Developer:
UW Medicine / Vulcan Real Estate
Ready Mix Provider:
Stoneway Concrete
Challenge
To meet the parking requirements for the project, the lowest parking level had to be constructed eight feet below the existing water table, necessitating a solution capable of withstanding high hydrostatic pressure.
Solution
Hycrete360 (formerly System W) offered superior performance to other waterproofing systems, was more cost-effective and accelerated the construction schedule. Using Hycrete360 eliminated the need for waterproofing membranes and saved Sellen Construction approximately $150,000 up front in material savings. 
Material Savings
Time Savings
Result
Total material and time savings are $450,765. On top of CO2 savings associated with eliminating de-watering pumps, eliminating waterproofing membranes saved over 33,000 pounds of landfill waste, 16,000 pounds of asphalt, 1,100 pounds of VOCs (volatile organic compounds), and 62,000 square feet of non-renewable materials.
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