2x6 Floor Joist Max Span

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.

2x6 floor joist max span.

2 grade of douglas fir and maximum span floor joists imperial units engineering toolbox resources tools and basic information for engineering and design of technical applications. As an amazon associate i earn from qualifying purchases. The longer the joist the more area of deck the joist supports and thus the beam supports. 2x6 joists should only be used on ground level decks that do not require and will not provide for any guards.

Beam span maximums are based on a maximum anticipated live load. For conventional guardrail post installation bolted to the side of the framing larger framing will provide more strength in the rails. For upper level decks 2x10 is recommended as the minimum size to use for strong guard post connections. Building codes for residential decks only require 40 psf.

Article may contain affiliate links. 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. Spans in this table were derived from the irc table r502 3 1 2. 12 4 2 2x4 2 2x4 2 2x4 2 2x6 2 2x6 2 2x6 2 2x6 2 2x8 2 2x8 j 5 2 2x4 2 2x4 2 2x6 2 2x6 2 2x6 2 2x6 2 2x8 2 2x8 2 2x10 o i 6 2 2x4 2 2x4 2 2x6 2 2x6 2 2x6 2 2x8 2 2x8 2 2x10 2 2x10 s.

While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator. Publications calculators software building codes fire safety span tables decks weights and measurement codes standards calculators software.