CGD Eco Challenge

Eco Challenge

National Weather Center Green Roof- Oklahoma's First University Vegetative Roof System: The National Weather Center's green roof comprises 1,280 square feet and consists of 160 planted green roof trays. The trays contain an engineered substrate consisting of lightweight sand, expanded clay and organic material with only a third of the weight of regular topsoil. The roof is planted with sedums  exotic succulents that are highly adaptive to a green roof's growing conditions. Native dry-land prairie grasses and flowers have also been seeded over the sedum for comparison. Vegetative roof systems, also known as green roofs, have been shown to improve energy and water efficiency and enhance water quality. The systems intercept solar radiation and cool structures during the summer months. Annual storm-water runoff also is reduced, and pollutants are reduced in the storm-water effluent.