Wood Beam Span Tables Ontario

The ontario building code spans for joists rafters and beams 9 23 4 2.

Wood beam span tables ontario.

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

Tables a 1 to a 16 cover only the most com mon. The numbers in gray indicate the distance between the support posts. This span table excerpt shows two possible sizes of built up floor beams 2 x 10 and 2 x 12. Sample floor beam span table.

Floor joist span tables for various sizes and species of wood. 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. 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 full table shows more lumber sizes.

Span calculator for wood joists and rafters also available for the android os. Also available for the android os. A double 2x12 beam can span 12 feet. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

A 2 2x10 can span 10 feet and so on. This table is simply a sample and may not be valid for your region. There are several beam span tables for all the species of wood. Ontario building code wood beam span tables.

The span book is a supplement to the wood joist rafter and beam spans found in the national building code of canada. December 15 2018 by arfan leave a comment. 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. It also shows the maximum that the beam can span.

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. Dimensional lumber deck beam span chart. The national building code references the span book as follows.