You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Wood beam span tables ontario.
Headers beams.
Beam and joist span tables built up wood floor beams supporting one floor in a house maximum spans for uniformly distributed loads species and grade supported built up beam size joist length 3 2x8 4 2x8 3 2x10 4 2x10 3 2x12 4 2x12 8 9 8 11 2 11 10 13 8 13 8 15 10 10 8 8 10 0 10 7 12 2 12 3 14 2.
Tables a 1 to a 16 cover only the most com mon.
Span calculator for wood joists and rafters also available for the android os.
The ontario building code spans for joists rafters and beams 9 23 4 2.
A 2 2x10 can span 10 feet and so on.
The national building code references the span book as follows.
It also shows the maximum that the beam can span.
There are several beam span tables for all the species of wood.
2 spans for floor joists that are not selected from tables a 1 and a 2 and that.
The numbers in gray indicate the distance between the support posts.
Size selection tables headers beams.
This table is simply a sample and may not be valid for your region.
A double 2x12 beam can span 12 feet.
Tables in the span book and the national building code were both generated by the canadian wood council.
Ontario building code wood beam span tables.
Also available for the android os.
When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.
Sample floor beam span table.
This span table excerpt shows two possible sizes of built up floor beams 2 x 10 and 2 x 12.
Floor joist span tables for various sizes and species of wood.
December 15 2018 by arfan leave a comment.
Allowable load tables tables providing size selections for various beam spans and loading combinations for southern pine dimension lumber and southern pine glued laminated timber are available for the following applications.
The full table shows more lumber sizes.
Wood i beam joists cantilevers in the 2016 code professional deck builder wood i beam joists floor joist span chart leasord co floor beam span tables calculator.
The span book is a supplement to the wood joist rafter and beam spans found in the national building code of canada.
Spans for joists rafters and beams 1 except as required in sentence 2 and article 9 23 13 10 the spans for wood joists and rafters shall conform to the spans shown in tables a 1 to a 7 for the uniform live loads shown in the tables.