Open Web Roof Joist Span Table

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.

Open web roof joist span table.

Span calculator for wood joists and rafters also available for the android os. For the proper handling of concentrated and or varying loads see section 2 3 in the code of standard practice for steel joist and joist girders. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit.

Trimjoist is the marriage of an open web floor truss and a trimmable wooden i joist bringing the best features of each to the relationship. The maximum span is measured o c. For an in depth review of all of this information the sji suggests the current compilation of all years specifications and load tables 90 years of open web steel joist construction. Open web steel joists k series.

No more custom made floor trusses. Important notes on span tables. Find span carts for open joist products. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size.

Of bearings and is based on uniformly loaded joists. Open web steel joists are an engineered truss like construction component used to support loads over short and long spans alike. Spans are based on uniformly loaded joists and include allowances for repetitive use members. Each load table was accompanied by notes and instructions covering assumptions and other important information.

Live loads of 40 psf assumed. Also available for the android os. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Dead load deflection is limited to l 360 and total load deflection is limited to l 240.

Additional dead loads are due to various combinations of construction materials. Typically used in non residential construction steel joists and joist girders provide an economical system for supporting floors and roofs. Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability. Engineered wood products ewp span and size charts for bci joists.

Loads for span increments not explicitly given in the load table may be determined using linear interpolation between the load values given in adjacent span columns. Do not install them upside down.