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NYC Building Code

§ 3305.3.5.1.3 — § 3305.3.5.1.3

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What is NYC BC § 3305.3.5.1.3?

Quick Answer

This section outlines the requirements for demonstrating sufficient concrete strength through structural analysis and testing methods. It specifies that concrete strength data must be derived from field-cured cylinder tests or estimated using the maturity method, ensuring compliance with specified compressive strength for formwork or shoring removal. Applies to building owners involved in construction projects.

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

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3305.3.5.1.3 Concrete strength.

BC § 3305.3.5.1.3

Sufficient strength shall be demonstrated by structural analysis of the proposed loads, the strength of the forming and shoring system, and concrete strength data. Concrete strength data shall be based on tests of field-cured cylinders. As an alternative, the concrete strength is permitted to be estimated using the maturity method performed in accordance with ASTM C 1074, provided that the strength is at least 500 psi (3447.38 kPa) higher than the specified compressive strength necessary for formwork or shoring removal, as applicable. Other procedures for evaluating concrete strength are also permitted when approved by the commissioner.

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