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NYC Building Code

§ 2111.7 — § 2111.7

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What is NYC BC § 2111.7?

Quick Answer

This section specifies the minimum dimensions for the firebox of a masonry fireplace, including depth, throat height, and opening size. It also outlines requirements for the cross-sectional area of the passageway above the firebox. Applies to building owners constructing or renovating masonry fireplaces.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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2111.7 Firebox dimensions.

BC § 2111.7

The firebox of a masonry fireplace shall have a minimum depth of 20 inches (508 mm). The throat shall be not less than 8 inches (203 mm) above the fireplace opening. The throat opening shall not be less than 4 inches (102 mm) in depth. The cross-sectional area of the passageway above the firebox, including the throat, damper and smoke chamber, shall be not less than the cross-sectional area of the flue. Exception: Rumford fireplaces shall be permitted provided that the depth of the fireplace is not less than 12 inches (305 mm) and at least one-third of the width of the fireplace opening, and the throat is not less than 12 inches (305 mm) above the lintel, and at least 1/20 the cross-sectional area of the fireplace opening.

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