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801.3 Masonry chimneys.
Masonry chimneys shall be constructed in accordance with the New York City Building Code.
801.4 Positive flow.
Venting systems shall be designed and constructed so as to develop a positive flow adequate to convey all combustion products to the outside atmosphere.
801.5 Design.
Venting systems shall be designed in accordance with this chapter and comply with the requirements of the New York City Air Pollution Control Code.
801.6 Minimum size of chimney or vent.
Except as otherwise provided for in this chapter, the size of the chimney or vent, serving a single appliance, except engineered systems, shall have a minimum area equal to the area of the appliance connection.

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