Deck Span Tables

A double 2x12 beam can span 12 feet. Dimensional lumber deck beam span chart. Span requirements listed on the accompanying table ensure your deck won t sag or collapse during a party or under snow load.

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Deck beam span table deck joist span table deck joist rule of thumb deck porch construction structural fasteners deck porch post beam connectors.

Deck span tables. 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. A continuous span bearer is one that is supported at more than two points along it s length. Find out how far your deck joists can span when framing your deck. Live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code.

A deck more than 2 feet or two steps above ground must have a railing. The canadian wood council cwc deck span tables 2016. For example a deck that is 1 metre long and 1 metre wide is likely to have only two bearers one either side running the length of the deck and will be considered single span as each bearer will be supported only at each end. Choose from multiple types of decking and from 2x6 up to 2x12 joists.

Codes specify maximum spans according to the type of wood used. Finally in the spring of 2016 the cwc published deck span tables and put them on the web for free in the form of a pdf. The numbers in gray indicate the distance between the support posts. A 2 2x10 can span 10 feet and so on.

This update includes a design example at the end of the document. 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. In 2019 they published revision 1.