Wood Beam Span Tables For Decks

This article explains typical spans for deck joists deck beams and deck flooring giving both standard span tables and a quick rule of thumb that works pretty well.

Wood beam span tables for decks.

A 2 2x10 can span 10 feet and so on. Deck builders can now refer to section r507 6 deck beams and table r507 6 deck beam span lengths to determine the size of 2 ply and 3 ply built up beams made from 2 6 through 2 12 lumber. Sizing deck beams got a lot easier with the publication of the 2015 international residential code. Joist beam spans sizes.

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. Dimensional lumber deck beam span chart. But you ll notice when you look at the portion of the span table for joists with cantilevers that the joist span for decks with a cantilever is often less than the span for the same sized joist without cantilevers.

Numbers in blue are joist spans beam to beam or house to beam. Floor joist span tables for various sizes and species of wood. Recommended or allowable joist beam spans. The numbers in gray indicate the distance between the support posts.

Framing tables for decks.