Building 1 Two 1,320-gallon Bushman cisterns with overflow to side sewer.
Building 2 Two 1,110-gallon Bushman cisterns with overflow to side sewer.
Building 3 Two 420-gallon Bushman cisterns with overflow to side sewer.
The Valley School campus is spread out over eight city lots and comprises of classrooms, a library, meeting space, and administrative buildings. Each building is unique and required different calculations for cistern size and placement. However, each RainWise installation captures the entire roof area, with Building 1 capturing 2,862 square feet, Building 2 capturing 2,183 square feet, and Building 3capturing 1,249 square feet. This comes to nearly 6,300 square feet of roof area that keeps almost 140,000 gallons of stormwater out of Lake Washington every year.
Valley School’s contractor, Rain Dog Designs completed the project from start to finish in about six months.