How Far Can You Cantilever A 2x8
Camila Farah
Good working rule is that a cantilever should not exceed 4 times the height of the joists.
So the question is how much can we cantilever the far ends of the joists looking at the table below we see that 2x6 floor joists can be cantilevered up to 2 feet and 6 inches 2 6 when the joists are spaced 16 apart. Any more and it may be bouncy. Deck joist cantilever rules and limits joist spacing o c 24 douglas fir larch hem fir spruce pine fir 2x6 1 2 2x8 2 2 2x10 2 9 2x12 3 3 how far can a 2x8 joist cantilever. A double 2x12 beam can span 12 feet.
If the code span tables allow a 2x8 to span 12 feet then the cantilever can be 3 feet. Many building departments limit joist cantilevers to 24 maximum. Joist cantilevers according to the new span tables and irc provisions cantilevers can extend up to one fourth the backspan of the joist. Dimensional lumber deck beam span chart.
The american wood council states that cantilevers are limited to 1 4 the span of the joists. A 2 2x10 can span 10 feet and so on. 2x8 7 25 inches high x 4 29 inches. The numbers in gray indicate the distance between the support posts.
RELATED ARTICLE :
2x8 7 25 inches high x 4 29 inches. How much can you cantilever 2x8. Maximum allowable overhang cannot exceed 1 4 of the actual main span. You must use at least five framing nails to attach the rim joist to the ends of your joists.I think 3 ft would be okay. Code says 2ft cantilever can be done with 2x8 joists. Furthermore how far can you cantilever a 2x10 deck joist. When supporting joists that span 12 feet with no overhang beyond the beam a double ply beam can span in feet a value equal to its depth in inches.
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