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NYC Building Code

§ 2113.4 — § 2113.4

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What is NYC BC § 2113.4?

Quick Answer

This section outlines the requirements for seismic anchorage of masonry chimneys and foundations in buildings exceeding six feet in height. It specifies the use of straps and bolts for securing chimneys to floor joists, with exceptions for certain seismic design categories. Applies to building owners of structures with masonry chimneys.

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

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2113.4 Seismic anchorage.

BC § 2113.4

Masonry chimneys and foundations shall be anchored at each floor, ceiling or roof line more than 6 feet (1829 mm) above grade with two 3/16-inch by 1-inch (4.8 mm by 25 mm) straps embedded not less than 12 inches (305 mm) into the chimney. Straps shall be hooked around the outer bars and extend 6 inches (152 mm) beyond the bend. Each strap shall be fastened to not less than four floor joists with two 1/2-inch (12.7 mm) bolts. Exception: Seismic anchorage is not required for the following: 1. In structures assigned to Seismic Design Category A or B.

2.Where the masonry fireplace is constructed completely within the exterior walls.

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