These tables originally appeared in the steel joist institute specifications and load tables commonly referred to as a catalog beginning with the first edition published in 1932.
Steel roof joist span tables.
Allowable limiting heights spans contact clarkdietrich technical services at 888 437 3244 for any questions on tables below.
Typically used in non residential construction steel joists and joist girders provide an economical system for supporting floors and roofs.
In depth catalogs feature the latest information and are available in convenient interactive pdf format.
Steel joists joist girders.
Table notes spans are based upon continuous support of compression flange over the full length of the joist.
Each load table was accompanied by notes and instructions covering assumptions and other important information.
Calculated allowable properties are based upon aisi s100 07 north american specification for the design of cold formed steel structural members.
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For two equal spans the listed span is the center to center distance from either end to the center support.
Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.
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