4300 12th St SE Permanent Supportive Housing Project
Washington DC
MCE provided MPE engineering design for the District-owned supportive housing project in Ward Eight of Washington, DC. The four- story facility provides 38 two and three bedroom apartments, public laundry facility on each floor, administrative offices, community room, day-care play room and a computer room for the residence.
Each wing is conditioned by a Variable Refrigerant Flow (VRF) system. Conditioned outside air is ducted to each apartment and public spaces from a dedicated outside air system (DOAS). The DOAS unit contains an energy recovery unit to reclaim energy from building exhaust air.
Incoming domestic cold water pressure is boosted by domestic water booster pumps prior to distribution to overcome low incoming water pressure. Two high efficiency gas fired boilers and a storage tank provide domestic hot water throughout the building.
Building sprinkler system pressure is boosted by a fire pump and a jockey pump to supply sprinkler system with required pressure per NFPA. A gas fired emergency generator is provided to power the fire pump, ADA elevator and emergency lights.
This building requires a LEED gold certification. Certification is according to LEEDv4 Homes principles. The MEP disciplines designs comply with LEEDv4 Homes requirements.
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