Deck Floor Joist Span Chart

Here s a helpful chart covering the most popular wood framing species and their maximum allowed spans.

Deck floor joist span chart.

Steel post cap connectors plywood post to beam cleats other connectors deck porch railings code requirements safety deck framing tables codes specifications questions answers about allowable spans for deck floor or porch framing. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. View joist rafter tables. A 2x8 up to 12 feet.

Floor joist span tables for various sizes and species of wood. Joist size spacing between joists decking material and wood species. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Lag screws or bolts joist hanger deck joist 1 5 8 min to 5 max existing wall sheathing deck joist existing floor joist ledger board hold down or similar tension devise located in at least 2 locations within 24 of each end of deck.

What is the proper placement. The proper deck joist span distance between supporting beams below the joists for your deck should be known before you start building and is needed to draft your deck plan. Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code. The spans of joists varies based upon several factors.

For example joists spaced 16 inches from the center of the joist next to it can span 1 5 times in feet the depth of their inches. The deck joist span chart below is based on the updated codes from the international residential code 2015 which for the first time specifically addressed these deck design considerations. How do i keep them even. Ready to start calculating how much lumber you ll need for your joists.

How far apart are floor joists placed. As a rule the larger the deck the larger the joists. Composite deck joist space. I asked my local building official how he checks a deck plan to make sure the joist size and spacing combination will meet requirements of the building code he goes to the 40 lb.

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 these tables can also be used to determine deck joist span. Deck beam span table deck joist span table deck joist rule of thumb deck porch construction structural fasteners deck porch post beam connectors. Deck joist spacing for composite decking remains largely the same as if. Deck joists have a different maximum span length depending upon the size spacing and framing material that you re creating your deck with.

To learn more about deck joist sizing spacing and allowable span reference this chart. The maximum joist spans below are based on a ground snow and live load of 40 pounds per square foot and a dead load of 10 pounds per square foot. A lot of questions revolve around joists when it comes to building a deck.