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NYC Building Code

§ 1905.1.3 — § 1905.1.3

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What is NYC BC § 1905.1.3?

Quick Answer

This section establishes that the compressive strength of concrete (f 'c) shall be based on 28-day tests unless otherwise specified in construction documents. It mandates rejection of non-conforming concrete and requires documentation of compromised loads. Applies to building owners involved in concrete construction and testing.

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

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1905.1.3 Basis of f 'c.

BC § 1905.1.3

Unless otherwise specified, f 'c shall be based on 28-day tests. If other than 28 days, test age for f 'c shall be as indicated in construction documents. If at any time during the concrete operations, the concrete is not in conformance with ASTM C 94 or is otherwise compromised, it shall be rejected. If it is placed, the location of the load shall be recorded and a pair of cylinders shall be molded from the load per ASTM C 31 and included in the average f 'c .

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