So read on and learn a little bit about what affects the strength of your decking - like material and joist spacing. Your selection of decking material will determine the maximum spacing of your joists. Some species of wood are stronger than others so refer to the Decking Span Table below before going to the Deck Joist Span Table.
Joists & Rafters. Simplified maximum span tables for selected visual and mechanical grades of Southern Pine lumber in sizes 2×4 thru 2×12. Listed are 46 tables based on common loading conditions for floor joists, ceiling joists and rafters. View Joist & Rafter Tables. Headers & Beams
Deck Cantilevers. Section R507.5 notes that deck joists can cantilever up to 1/4 of the joist span. 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.
Deck joist ing composite deck joist span table tired of the artificial look many alternative wood decks on market for centuries has been favored decki deck joist ing the composite decking requirements trex specifications transcend requirement recommended fasteners for deck porch flooring table 4 7 maximum beam spans in feet for exterior decks c. Span […]
Determining the correct deck joist spacing and span is actually more complicated than you may think. Although building a deck seems straightforward, there are a few important design factors to keep in mind. Your maximum joist span will depend on the wood species, joist spacing, size and whether the joists will be cantilevered.