This table is simply a sample and may not be valid for your region.
Wood beam span table canada.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
Tables in the span book and the national building code were both generated by the canadian wood council.
The full table shows more lumber sizes.
Sample floor beam span table.
It also shows the maximum that the beam can span.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
There are several beam span tables for all the species of wood.
A 2 2x10 can span 10 feet and so on.
Floor joist span tables for various sizes and species of wood.
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.
This span table excerpt shows two possible sizes of built up floor beams 2 x 10 and 2 x 12.
Although all possible efforts have been made to ensure that the information from this tool is accurate the cwc cannot guarantee the completeness accuracy or exactness of the information.
The national building code references the span book as follows.
A double 2x12 beam can span 12 feet.
Dimensional lumber deck beam span chart.
The span book is a supplement to the wood joist rafter and beam spans found in the national building code of canada.
The numbers in gray indicate the distance between the support posts.