1840 CONEY ISLAND AVENUE MIDWOOD,NY 11230

A new outpatient building on a Brooklyn avenue with a cellar for plant and storage, a ground-floor imaging and consultation suite, and two floors above. The second floor holds a 24-station dialysis unit, which needs ultra-pure water piped to every chair, stable temperatures and a reliable drain at each station. All of it had to be designed to the NYC Construction Codes and the 2020 NYC Energy Conservation Code. Like every New York project, the design also has to satisfy the NYC Construction Codes and the city's energy code requirements.

Mechanical: we scheduled ventilation room by room for about 26,600 ft² of rooms, with the highest outdoor-air rate on second floor (dialysis). Heating and cooling come from a VRF heat pump system of 4 outdoor units totalling about 62 tons and 58 indoor units, backed by 2 15-ton gas-fired rooftop units and 2 energy-recovery ventilators. A cellar treatment room feeds a continuously circulating treated-water loop to every station, with a floor-mounted drain box at each chair. Electrical: we scheduled the power connection for every rooftop unit, VRF unit, fan, heater and pump — voltage, phase, minimum circuit ampacity and overcurrent protection — and sized the building service for the connected load. Plumbing: A duplex variable-speed booster set supplies domestic water, two 100-gallon gas-fired heaters supply hot water with recirculation, and a duplex sump keeps the cellar drained. Fire protection: a wet sprinkler system on a 6-inch combined sprinkler and standpipe riser fed directly from the city main, hydraulically calculated at about 460 gpm against the city hydrant test. We also prepared the COMcheck energy analysis, the backflow prevention applications and the mechanical, plumbing and sprinkler sets for filing.