Deck Floor Joist Span Chart

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.

Deck floor joist span chart.

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. 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. Joist size spacing between joists decking material and wood species. 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.

2x10 to 15 feet and 2x12 to 18 feet. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Deck joists have a different maximum span length depending upon the size spacing and framing material that you re creating your deck with. Deck beam span table deck joist span table deck joist rule of thumb deck porch construction structural fasteners deck porch post beam connectors.

How do i keep them even. The spans of joists varies based upon several factors. 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. Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code.

Floor joist span tables for various sizes and species of wood. What is the proper placement. A 2x8 up to 12 feet. A lot of questions revolve around joists when it comes to building a deck.

Ready to start calculating how much lumber you ll need for your joists. Composite deck joist space. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. View joist rafter tables.

Here s a helpful chart covering the most popular wood framing species and their maximum allowed spans. Min of 1 500 lb stress design capacity for each device existing fully threaded 3 8 diameter lag screw. 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. As a rule the larger the deck the larger the joists.

Deck joist spacing for composite decking remains largely the same as if. 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. 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.