Wood Beam Load Tables

Anything 5 and above we always at least double cripple.

Wood beam load tables.

Window door garage door headers supporting roof loads only window door garage door headers supporting roof wall floor loads. View 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 span of a beam is dependent on a few variables.

The species of lumber size of lumber and the load it carries. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Table specifications are provided with each table indicating conditions and assumptions used to calculate the loads.

These tables are provided as a guideline. These easy to use tables were compiled by the southern forest products association sfpa as a service to design build professionals and other. Fewer posts on upper level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans. On longer spans the beam may require much more bearing space as indicated by this table.

Beams of more than one ply must be fastened together with either nails or bolts. Aitc beam capacity tables aitc capacity tables provide the uniformly distributed load that a glued laminated timber beam can support based on beam size span and material properties. According to the 2012 irc codes any beam joist or header shall never have a bearing of less than 1 1 2. Joist and rafter span tables.