Water Conservation Measures in Green Building By Sijia Cao

Agenda Green Building o LEED Water Conservation Measures o Water Efficient Landscaping o Innovative Wastewater Technologies o Water Use Reduction Case study (Sidwell Friends School, Washington DC)

Green Building Green building refers to a structure and using process that is environmentally responsible and resource-efficient throughout a building's life-cycle: from siting to design, construction, operation, maintenance, renovation, and demolition. (Wiki)

Green Building- LEED Leadership in Energy and Environmental Design Developed by USGBC A suite of rating Systems 6 Categories ( Sustainable Sites, Water Efficiency, Energy & Atmosphere, Materials & Resources, Indoor Environmental Quality, Innovation in Design, Regional Priority) 4 Certification Levels

Water Conservation Measures o Water Efficient Landscaping o Solidago (Invasive) Efficient irrigation Captured rainwater Recycled wastewater Plant species

Water Conservation Measures Innovative Wastewater Technologies (Treat on-site)

Water Conservation Measures o Water Use Reduction (Water-saving instruments) ultra low volume Water use Reduction Cut water use by 20%, excluding irrigation Energy Policy Acts of 1992, 2005; IAPMO/ American National Standards Institute UPC1-2006, Uniform Plumbing Code 2006, Section 402.0; International Code Council, International Plumbing Code 2006, Section 603, Design of Building Water Distribution System Owner, architect, engineers, design team Credit TitleRequirementsReferenced StandardsDecision Makers

Case study --Sidwell Friends School Where: Washington DC When: September 2006 What: LEED Platinum Building

Water Efficient Landscaping in Sidwell Friends School Efficient irrigation: Planting native species, drought resistant and able to thrive naturally in our area eliminates the need to irrigate, saving water and energy Captured rainwater Water loss and soil erosion

Innovative Wastewater Technologies in Sidwell Friends School Restroom (toilets, sinks) Pre- treatment tank Flow splitter two wetland terrace cells (de-nitrification) approximately 2 inches below the surface, through the thick web of roots and gravel. Excess nitrogen is removed from the waste water by microorganisms and used by the plants as fertilizer. trickling filter (add oxygen to) the water ) sand filter(Bacteria on the surface of the grains of sand break down small remaining waste particles) Reuse Holding Tank (reclaimed water/grey water) 93% less water used

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