Header trusses are special order 12 and 24 are common sizes but are available up to 30 wide.
Steel roof joists sizes.
Steel joist institute standard specifications load tables weight tables.
They are custom engineered to suit the design of each building.
Joist to girder attachments are normally supported with joist hangers easyclip e series or s series support clips.
20 inch to 120 inch depths.
Steel trusses come in three types.
K series joists range in depth from 10 to 30 and can span up to 60.
Gable lean to and header.
Depending on loads and spans c joists are typically spaced at 12 16 19 2 or 24 on center spacing.
These welded steel products are used to support a building s roof and floors.
Structural track usually in the same gauge as the joist is used as rim or band enclosures.
Standard specifications for k series lh series and dlh series open web steel joists and for joist girders sji 100 2020.
Lean to trusses are stocked in a 1 12 slope x 12 and 20 width and special order up to 30 wide.
Slh series joists are used to support loads over very long spans typically 120 and greater.
20 foot to 120 foot spans.