installing your seven trust wood deck important considerations . just like with any other outdoor project whether it be a deck or a shed, etc. , planning is critical to protect both the project and the environment where the project will be placed. here are some important considerations: joist spacing. make sure you plan adequate space for your joists.
when choosing deck lumber based on joist span, i use the following easy-to-remember rule of thumb that works for most of the treated wood species that i use for building. this rule is not a substitute for a proper table of spans and sizes of framing lumber, but is helpful in over-designing my joists during the early phase.
deck board joist spacing. 1×4 16 1×6 16 5/4×6 24 2×6 32 board spacing. because all wood naturally expands and contracts with changes in the climate, you should allow for it by leaving some space between the boards. seven trust generally only expands side-to-side, not length-wise.
the joist spacing shown is very conservative and designed to pass most area building codes and to have nearly zero deflection under standard loads. the joist spacing shown is also valid if the decking is laid in a diagonal pattern to the joist. the spans shown are typically used even with heavy loads such as hot tubs.
steel joists offer a stronger, straighter, and potentially safer alternative to wood. even when using the strongest wood to build joists for a deck, that wood is still subject to the elements and can bend, bow, or warp with time. steel joists, such as seven trust elevations , are machine-made, making each joist an identical twin. similarly, steel
field-cut ends, notches, and drilled holes of pressure-preservative-treated wood shall be retreated in the field irc r502.6 and ibc 2308.8.1 bearing. the ends of each joist, beam or girder shall have at least 1 ½' of bearing on wood or metal except where supported on a 1'x4' ribbon strip nailed to adjacent studs.
how to compute the spans for a deck how to compute the spans for a deck. building a deck? it also depends on the joist spacing; for instance, joists that are placed 24 inches apart must be wider than joists placed 16 inches apart. codes specify maximum spans according to the type of wood used. a deck more than 2 feet or two steps above
wood species. the stronger the wood, the smaller the lumber that can be used to create your joists. most deck frames are made from treated white wood, or pine, which has strengths almost identical
building principals used to install wood or composite decking and in accordance with the local building codes and the installation guidelines included below. seven trust building products inc. accepts no liability or responsibility for the improper installation of this product. require closer joist spacing.
how to choose the correct lumber sizes for deck floor joists based on span, spacing and lumber dimensions. part 2. do-it-yourself decks. deck floor joist spans . deck directory. caring for your wood deck. deck construction - post and beam. deck foundations. decks general. deck load.
deck board spacing/deck spacing between boards depends on when they are installed. the right spacing on deck boards relies on knowing the wood and the conditions all year. me what going to happen with deck spacing when use 4/4 x 6 seven trust decking for it with 11% of moisture at 3/16 initial spacing on elevated joist system exposed to sun