Open Web Roof Joist Span Table

Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.

Open web roof joist span table.

The maximum span is measured o c. Important notes on span tables. Live loads of 40 psf assumed. Engineered wood products ewp span and size charts for bci joists.

No more custom made floor trusses. Additional dead loads are due to various combinations of construction materials. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size.

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. Of bearings and is based on uniformly loaded joists. Dead load deflection is limited to l 360 and total load deflection is limited to l 240. Do not install them upside down.

All trimjoist products are cambered to compensate for dead load deflections. Open web steel joists k series. 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. Span calculator for wood joists and rafters also available for the android os.

As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. Typically used in non residential construction steel joists and joist girders provide an economical system for supporting floors and roofs. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities. Spans are based on uniformly loaded joists and include allowances for repetitive use members.

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. Also available for the android os. Each load table was accompanied by notes and instructions covering assumptions and other important information. The spans are based on simple span joists.

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 steel joists are an engineered truss like construction component used to support loads over short and long spans alike.