Open Web Roof Joist Span Table

Span calculator for wood joists and rafters also available for the android os.

Open web roof joist span table.

Spans are based on uniformly loaded joists and include allowances for repetitive use members. The maximum span is measured o c. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. Engineered wood products ewp span and size charts for bci joists.

Important notes on span tables. 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. 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. Each load table was accompanied by notes and instructions covering assumptions and other important information.

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. Do not install them upside down. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities.

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. Of bearings and is based on uniformly loaded joists. Live loads of 40 psf assumed. 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.

Find span carts for open joist products. No more custom made floor trusses. Typically used in non residential construction steel joists and joist girders provide an economical system for supporting floors and roofs. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.

Additional dead loads are due to various combinations of construction materials. The spans are based on simple span joists. Open web steel joists are an engineered truss like construction component used to support loads over short and long spans alike. Also available for the android os.

Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. All trimjoist products are cambered to compensate for dead load deflections.