Case Study
University of Washington Medicine
Hycrete Saved 4,000 tons of CO2 by EliminatingDe-Watering Pumps for UW Medicine.
HYCRETE360 PROVIDES SUSTAINABLE LONG-TERM CONCRETE PROTECTION
Structure: 2 Lab Buildings, 1 Office Building, and Below Grade Parking
Applications: Foundation Walls, Structural Slab, Fire Suppression Tank,
Temporary Roof, Elevator Pits
Owner: UW Medicine
Developer:
Vulcan Real Estate
Architect:
Perkins + Will
General Contractor: Sellen Construction
Engineer: MKA
Ready Mix Provider: Stoneway Concrete
Introduction
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.
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
Total Material Savings = $150,000
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
In addition, using Hycrete360 saved 30 days on the critical path (20 days on the slab on grade and 10 days on the foundation walls), totaling $300,000.
Time Savings
Total Time Savings = $300,000
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.
Solution
If a membrane is used behind a wall or under a slab, there is no way to repair it if it develops a leak. Water will continue to travel to find the nearest crack. When there is a breach in waterproof concrete you know where the problem is, and it can be addressed.
Jack Avery,
Senior VP, Director of Construction
Sellen Construction
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