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NYC Administrative Code

§ 27-577 — Shrinkage.

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What is NYC AC § 27-577?

Quick Answer

This section mandates that the design of reinforced concrete components account for shrinkage forces and movements, specifying different shrinkage rates for standard and lightweight concrete. The statute also addresses the design requirements for arches and similar structures. Applies to building owners involved in concrete construction and design.

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

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§ 27-577 Shrinkage.

AC § 27-577

The design of reinforced concrete components shall provide for the forces and/or movements resulting from shrinkage of the concrete in the amount of 0.0002 times the length between contraction joints for standard weight concrete, and 0.0003 times the length between contraction joints for lightweight concrete. The design of arches and similar structures shall provide for effects of shrinkage, plus rib-shortening, plus plastic flow.

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