Wood Beam Load Tables

Beams of more than one ply must be fastened together with either nails or bolts.

Wood beam load tables.

View size selection tables. These tables are provided as a guideline. Window door garage door headers supporting roof loads only window door garage door headers supporting roof wall floor loads. These easy to use tables were compiled by the southern forest products association sfpa as a service to design build professionals and other.

The species of lumber size of lumber and the load it carries. 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. View allowable load tables. Table specifications are provided with each table indicating conditions and assumptions used to calculate the loads.

The span of a beam is dependent on a few variables. On longer spans the beam may require much more bearing space as indicated by this table. 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.

Beam span maximums are based on a maximum anticipated live load. 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. Joist and rafter span tables. According to the 2012 irc codes any beam joist or header shall never have a bearing of less than 1 1 2.