Open Web Roof Joist Span Table

Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities.

Open web roof joist span table.

The maximum span is measured o c. 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. 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. 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. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. No more custom made floor trusses. Open web steel joists k series.

Open web steel joists are an engineered truss like construction component used to support loads over short and long spans alike. Live loads of 40 psf assumed. Do not install them upside down. The spans are based on simple span joists.

Important notes on span tables. Also available for the android os. Engineered wood products ewp span and size charts for bci joists. Spans are based on uniformly loaded joists and include allowances for repetitive use members.

All trimjoist products are cambered to compensate for dead load deflections. 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. Typically used in non residential construction steel joists and joist girders provide an economical system for supporting floors and roofs. Span calculator for wood joists and rafters also available for the android os.

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. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Dead load deflection is limited to l 360 and total load deflection is limited to l 240. Find span carts for open joist products.

The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Each load table was accompanied by notes and instructions covering assumptions and other important information.