1 5 Roof Decking

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1 5 roof decking. Type b wide rib deck provides excellent structural load carrying capacity per pound of steel utilized and its nestable design eliminates the need for die set ends. This is due to the fact that it is the most efficient 1 5 deep steel roof deck section. In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart. 22 20 18 16.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. 3 weeks based on material availability. It is recommended to pour a minimum of 2 of concrete over the ribs of the deck for a total slab thickness of 3 5. 1 5 composite metal deck requires less concrete but spans shorter distances than deeper composite metal decking.

B roof deck can be manufactured in the following gauges. 6 0 to 42 0 ulc listing tables conform to can csa s136 12 and meet the guidelines of cssbi 10m 2013 unless noted otherwise. B deck is strong light weight economical and easy to install and is the most common structural roof deck. 22 gauge is the lightest weighing 1 9 pounds per square foot.

Also known as narrow rib this structural metal roof deck provides a wide support surface for various types of rigid insulation and roofing materials. 1 5 type a roof deck type a roof deck is 1 5 deep. 16 gauge is the heaviest weighing 3 5 pounds per square foot. Verco hsb 36 stands for high shear b deck 36 wide.

B deck hsb 36 high shear b deck 1 5 deep good in stock. Compared to type a roof decks and type f roof decks type b metal roof deck has the highest strength to weight ratio. Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood. B deck is by far the most commonly used roof deck for new construction projects.

For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.