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NYC Building Code

§ 1905.4 — § 1905.4

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What is NYC BC § 1905.4?

Quick Answer

This section outlines the requirements for concrete proportioning without field experience or trial mixtures, mandating adherence to ACI 318, Section 26.4.4.1(b). It specifies that this method is not allowed for large volumes of load-carrying structural concrete or certain exposure classes. Applies to building owners involved in concrete construction.

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

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1905.4 Proportioning without field experience or trial mixtures.

BC § 1905.4

Concrete proportioning determined without field experience or trial mixtures shall be done in accordance with ACI 318, Section 26.4.4.1(b). This method of proportioning shall not be permitted for: 1. Load-carrying structural concrete where the total volume of concrete on a given project exceeds 50 cubic yards (38 m 3 ); or 2. Structural or non-structural concrete mix proportions that will be exposed to exposure classes S1, P1, or C2.

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