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NYC Building Code

§ 2511.4 — § 2511.4

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What is NYC BC § 2511.4?

Quick Answer

This section outlines the requirements for the condition of interior masonry or concrete surfaces, specifying the use of approved gypsum plaster or acoustical plaster. It details the maximum thickness of plaster applied to concrete ceilings according to ASTM standards and mandates the installation of metal lath if the thickness exceeds specified limits. Applies to building owners responsible for interior finishes.

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

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2511.4 Interior masonry or concrete.

BC § 2511.4

Condition of surfaces shall be as specified in Section 2510.7. Approved specially prepared gypsum plaster designed for application to concrete surfaces or approved acoustical plaster is permitted. The total thickness of base coat plaster applied to concrete ceilings shall be as set forth in ASTM C 842 or ASTM C 926. Should ceiling surfaces require more than the maximum thickness permitted in ASTM C 842 or ASTM C 926, metal lath or wire fabric lath shall be installed on such surfaces before plastering.

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