I Beam Span Table

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

I beam span table.

Span tables for domestic floor joists to bs 5268 7 1 note. Low pitch 6 12 or less 14 15. In the article it is stated that a 12 joist span corresponds to the double beam span a length equal to the 2x width. The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c.

Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720 this performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span. Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2 these tables can also be used to determine deck joist span. Web stiffeners shall be cut to fit between the flanges of the lp solidstart i joist leaving a minimum 1 8 gap 1 maximum. Floor joist span tables for various sizes and species of wood.

Bci joist span and size charts available for download. Let s expand our house beyond that 17 2 span capability to 24 feet wide. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Michael t 5 17 2017 12 53 19 am reply.

So the house dimensions will now be 24 x 13. For the bird s mouth roof joist bearing detail. However this seems to match the 6 joist span column of the table. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.

Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.