Open Web Bar Joist Roof

An overview of open web steel joists the owner or manager of a building that features open web steel joist framing systems for the floors and or roof may occasionally wonder if they are strong enough to support new or additional loads and if not whether they can be modified to do so.

Open web bar joist roof.

Open web steel joists are relatively light in weight fabricated in a shop setting and have a trussed web. K series bar joists available with fast shop drawings and fabrication. Open web steel joists are an engineered truss like construction component used to support loads over short and long spans alike. Open web joists are designed and fabricated per the steel joist institute sji specifications.

Open web steel joists k series based on a 50 ksi maximum yield strength adopted by the steel joist institute november 4 1985 revised to may 18 2010 effective december 31 2010 the black figures in the load table give the total safe uniformly distributed load carrying capacities in pounds per linear foot of asd k series steel joists. The open web design of steel joists and joist girders introduce a range of cost and performance advantages. Typically used in non residential construction steel joists and joist girders provide an economical system for supporting floors and roofs. However at one time there was enough variation in the design and fabrication of these types of.

Fabricated open web joists are manufactured in this country by a number of different companies. 6 design of steel joist roofs to resist uplift loads. The joist selected requires one row of bolted x bridging. This wje primer is intended.

We supply all varieties of k joists. Lh and dlh joists have heavier chords and web members for heavier loads and longer spans. These concentrated loads often include standard steel joists that are in turn supporting steel roof or floor deck. The k series joist web is a single bent bar running zig zag between top and bottom chords.

Steel joists joist girders. Therefore steel bar joists or also known as open web steel joists for framing floors and roofs offer many advantages when compared to a wood truss or steel beam system. 10k1 s 24k4 s 24k5 s and more. Joist girders serve as primary framing members with simple spans to support concentrated loads for a roof or floor system.

Topics include the design requirements of the asce sei 7 10 wind provisions for open web steel joists and joist girders and the end anchorage and bridging considerations for uplift loads on steel joists.