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1305.14.2 Additional Construction Standards for Cylindrical Tanks Exceeding 275 Gallons (1041 L)
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Cylindrical tanks, including oval, elongated oval, or round tanks, exceeding 275 gallons (1041 L) shall comply with the requirements of Section 1305.14.2.1 through 1305.14.2.3.
Exception: Such above-ground vertical tanks that are outside of buildings shall comply with Section 1305.14.1 and 1305.14.5.
The minimum thickness shall be as follows:
1. Tanks 36 inches (914 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 (1829 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 (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.
Dished heads for such tanks shall have a curvature the radius of which is not greater than the diameter of the tank. Dished heads shall be formed with an adequate cylindrical extension rim to provide a welding surface.
If flat heads are used, they shall be braced in the same manner as described for the bracing of flat sides of rectangular tanks as provided for in Section 1305.14.3.
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Cylindrical tanks, including oval, elongated oval, or round tanks, exceeding 275 gallons (1041 L) shall comply with the requirements of Section ...
NYC Mechanical Code 2008 > 13 Fuel-Oil Piping and Storage > 1305 Fuel-Oil System Installation > 1305.14 Alternate Tank Design and Construction Standards > 1305.14.2 Additional Construction Standards for Cylindrical Tanks Exceeding 275 Gallons (1041 L)
1305.14.2 Fuel-Oil Piping and Storage, Additional Construction Standards for Cylindrical Tanks Exceeding 275 Gallons (1041 L)
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NYC Mechanical Code 2014 > 13 Fuel-Oil Piping and Storage > 1305 Fuel-Oil System Installation > 1305.14 Alternate Tank Design and Construction Standards > 1305.14.2 Additional Construction Standards for Cylindrical Tanks Exceeding 275 Gallons (1041 L)
1305.14.2.3 Fuel-Oil Piping and Storage, Flat Heads
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NYC Mechanical Code 2008 > 13 Fuel-Oil Piping and Storage > 1305 Fuel-Oil System Installation > 1305.14 Alternate Tank Design and Construction Standards > 1305.14.2 Additional Construction Standards for Cylindrical Tanks Exceeding 275 Gallons (1041 L) > 1305.14.2.3 Flat Heads
1305.14.4 Fuel-Oil Piping and Storage, Additional Construction Standards for Tanks 275 Gallons (1041 L) or Less
Storage tanks with a capacity of less than or equal to 275 gallons (1041 L) shall have a minimum thickness of shell and head plates of No. 10 ...
NYC Mechanical Code 2014 > 13 Fuel-Oil Piping and Storage > 1305 Fuel-Oil System Installation > 1305.14 Alternate Tank Design and Construction Standards > 1305.14.4 Additional Construction Standards for Tanks 275 Gallons (1041 L) or Less
1305.14.4 Fuel-Oil Piping and Storage, Additional Construction Standards for Tanks 275 Gallons (1041 L) or Less
Storage tanks with a capacity of less than or equal to 275 gallons (1041 L) shall have a minimum thickness of shell and head plates of No. 10 ...
NYC Mechanical Code 2008 > 13 Fuel-Oil Piping and Storage > 1305 Fuel-Oil System Installation > 1305.14 Alternate Tank Design and Construction Standards > 1305.14.4 Additional Construction Standards for Tanks 275 Gallons (1041 L) or Less