Steel Roof Joist Dimensions

Consumers in the application of new millennium building systems joist and joist girder products.

Steel roof joist dimensions.

They are custom engineered to suit the design of each building. Structural track usually in the same gauge as the joist is used as rim or band enclosures. Pages identified with the steel joist institute logo as shown above have been reproduced from the sji 42nd edition standard specifications load tables and weight tables for steel joists and joist girders. K lh and dlh series steel joists joist girders and lh and dlh series joists available as single or double pitched single piece steel joists can be produced up to 90 feet long joist girders.

Depending on loads and spans c joists are typically spaced at 12 16 19 2 or 24 on center spacing. K series joists range in depth from 10 to 30 and can span up to 60. Decreasing the distance between rafters to 12 inches however increases the maximum span to 14 feet 4 inches. Slh series joists are used to support loads over very long spans typically 120 and greater.

20 inch to 120 inch depths. These welded steel products are used to support a building s roof and floors. Pdf link sji joist load tables 43rd edition pdf. Steel joist institute standard specifications load tables weight tables.

About o donnell metal deck. For example 2 by 6 rafters made from select structural grade douglas fir that are required to support a live load of 20 pounds per square inch can have a maximum horizontal span of 11 feet 4 inches.