503.4.2.5 Smoke test.
FGC § 503.4.2.5
To determine the tightness of vent construction, a smoke test shall be conducted in accordance with the following conditions and requirements: 1. The equipment, materials, power and labor necessary for such test shall be furnished by, and at the expense of, either the owner or holder of the work permit.
2.If the test shows any evidence of leakage or other defects, such leakage or other defects shall be corrected in accordance with the requirements of this chapter, and the test shall be repeated until the results are satisfactory.
3.The vent shall be filled with a thick penetrating smoke produced by one or more smoke machines, or smoke bombs, or other equivalent method. As the smoke appears at the stack opening on the roof, such opening shall be tightly closed and a pressure equivalent to 1/2 inch (12.7 mm) column of water measured at the base of the special gas vent shall be applied. The test shall be applied for a length of time sufficient to permit the inspection of the special gas vent.
4.Testing and inspection of existing and new negative pressure chimneys and vents shall be in accordance with Section 1705.32 of the New York City Building Code.
