Steel Roof Joist Span Tables

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.

In depth catalogs feature the latest information and are available in convenient interactive pdf format. Steel joists joist girders. Prostud limiting height charts new clarkdietrich itools structural stud lookup tool interior wall heights w structural framing interior. Allowable limiting heights spans contact clarkdietrich technical services at 888 437 3244 for any questions on tables below.

Table notes spans are based upon continuous support of compression flange over the full length of the joist. For two equal spans the listed span is the center to center distance from either end to the center support. Calculated allowable properties are based upon aisi s100 07 north american specification for the design of cold formed steel structural members. Load table pdfs are best viewed in adobe acrobat reader.

Interior framing use iprostud in clarkdietrich itools to quickly lookup the interior framing system you need. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Open web steel joists are an engineered truss like construction component used to support loads over short and long spans alike. Each load table was accompanied by notes and instructions covering assumptions and other important information.