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NYC Mechanical Code

§ 1305.14.5.2 — § 1305.14.5.2

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What is NYC MC § 1305.14.5.2?

Quick Answer

This section specifies the minimum thickness requirements for shell, bottom, and roof plates in construction. It outlines a formula to determine the thickness of shell plates based on various factors including head pressure and tensile strength. Applies to building owners involved in structural design and compliance.

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

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1305.14.5.2 Thickness.

MC § 1305.14.5.2

The minimum thickness of shell or bottom plates shall be 1/4 inches (6.4 mm), and the minimum thickness of roof plates 1/8 inches (3.2 mm). The thickness of shell plates shall be determined in accordance with the following formula: t=P x R x F(Equation 13-2) T x E where: t=Thickness of shell plate in inches.P=Head pressure at bottom of ring under consideration in psi.R=Radius of shell, in inches.F=Factor of safety (taken as 5).T=Tensile strength of plate, in psi as verified by mill test certificate.E=Efficiency of vertical joint in ring under consideration. E shall in no case be taken greater than 1.00.

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