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Encyclopedia > Joist

A joist, in architecture and engineering, is one of the supporting bars that run from wall to wall to support a ceiling (or floor). It may be made of wood, steel or concrete.


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Special Vertical & Lateral Load Considerations for Steel Joists & Joist - An Online Course for Engineers and Architects (1796 words)
Joist manufacturers recommend that the most economical option (from a material quantity point of view) for the support of concentrated or non-uniform loads is to designate the use of special joists through the use of specific load diagrams.
Joist manufacturers indicate that for these type of hanger loads, the use of uniform loads to account for the actual loadings has proved to be reasonable and economical.
Joist manufacturers recommend that for eccentrically loaded joist girders or beams, the joist spacing be staggered on each side of the girder by at least 6" to allow for the bearing seats of the joists to extend past the center line of the girder.
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