locate upper and lower bolts maximum 5.5'/6.5'/7.5' apart vertically for 2x8/10/12 respectively ledger board width must be => deck joist width but =< rim joist width. minimum size is 2x8 corrosion resistant flashing is required for connecting to wood framed buildings
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. the spans of joists varies based upon several factors: joist size , spacing between joists , decking material and wood species.
following are tables for the two most common required psf loads for 12 inch joist spacing. both tables are based on the use of 2 grade lumber. table 1 is for 40 psf live load and 10 psf dead load. table 2 is for 60 psf live load and 10 psf dead load.
code requirements for decks footing size and depth. after you've laid out the perimeter of the deck, posts and beams. any wood incorporated into a deck structure that is in ground contact must be ledger boards. it's common to attach a deck to the side of a house or other structure,
decking requirements all decking material shall be composed of dimension lumber 2' nominal thickness or span rated decking in accordance with the american lumber standard committee policy for evaluation of recommended spans for span rated decking products november 5, 2004 . attach decking to each joist with 2-8d threaded nails or 2- 8 screws.
veranda armorguard decking, veranda composite decking and joist spacing joists used in deck specific framing and support requirements for their warranty coverage. composite decking will retain heat when exposed to direct online service composite decking joist spacing ,composite decking boards price
joist spacing for composite decking. before building a composite deck, always read the installation instructions from the manufacturer, paying special attention to the required joist spacing for composite decking. most composite decking materials, like seven trust composite decking, require minimum joist spacing for composite decking at 16' on center spacing for strht decking and 12' on center joist spacing for 45-degree angle diagonal decking.
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. live load floor joist span tables in chapter 7 of the state residential code based on the 2012 international residential code . and thats just what many deck builders, designers and inspectors have probably done
floor joist spacing has traditionally been 24 inches on center, or from center to center of the joists. newer construction has floor joists spaced at 16 inches on center.