31-10 THOMSON AVENUE LONG ISLAND CITY,NY 11101

A new ambulatory procedure building on a corner in Long Island City: a sub-cellar for plant and sterile processing, a parking cellar, a ground-floor entry and consulting suite, a procedure floor with four endoscopy rooms and two cardiac catheterization labs, and a third-floor recovery and administration floor. The procedure floor needs higher outdoor-air rates, medical gas and pressure control, and everything below street level has to be pumped up to the sewer. 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 41,100 ft² of rooms, with the highest outdoor-air rate on second floor (procedures). Heating and cooling come from a VRF heat pump system of 4 outdoor units totalling about 76 tons and 84 indoor units, backed by 4 12-ton gas-fired rooftop units and 3 energy-recovery ventilators. Each procedure room gets a minimum of 4 air changes of outdoor air per hour through MERV 14 filtration, oxygen, vacuum and waste-gas outlets, and a dedicated exhaust from the scope-cleaning room. 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 triplex variable-speed booster set supplies domestic water, two 119-gallon gas-fired heaters supply hot water with recirculation, and duplex sewage-ejector and sump pumps lift waste from the sub-cellar and cellar to the street sewer. Fire protection: a wet sprinkler system on a 6-inch combined sprinkler and standpipe riser plus a 4-inch standpipe with a fire pump and jockey pump, hydraulically calculated at about 480 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.