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NYC Mechanical Code

§ 1305.14.2.1 — § 1305.14.2.1

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What is NYC MC § 1305.14.2.1?

Quick Answer

This section specifies the minimum thickness requirements for tanks based on their diameter. It outlines the necessary shell and head thicknesses for tanks ranging from 36 inches to over 120 inches in diameter. Applies to building owners responsible for tank installations and compliance with thickness standards.

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

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1305.14.2.1 Thickness.

MC § 1305.14.2.1

The minimum thickness shall be as follows: 1. Tanks 36 inches (914.4 mm) in diameter or less shall have at least a 1/4-inch (6.4 mm) shell and 1/4-inch (6.4 mm) heads.

2.Tanks 37 inches (940 mm) to 72 inches (1828.8 mm) in diameter shall have at least a 1/4-inch (6.4 mm) shell and 5/16-inch (7.9 mm) heads.

3.Tanks 73 inches (1854 mm) to 120 inches (3048 mm) in diameter shall have at least a 5/16-inch (7.9 mm) shell and 3/8-inch (9.5 mm) heads.

4.Tanks over 120 inches (3048 mm) in diameter shall be of at least 3/8-inch (9.5 mm) steel and shall be stiffened by angle rings or equivalent members so as to retain their cylindrical form.

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