deck post to deck beam requirements beam requirements deck beam requirements splices required to be deck joist requirements joist depth the end of each beam shall have a minimum of 1 ½ of bearing on wood or metal or 3on masonry located at interior posts joist beam ledger board 2 rows 10d 3 x .128 nails or wood screws
all the expansion/contraction of timber is across the grain generally not along the grain and anyone with a deck will have witnessed the obvious difference in board gaps between the middle of winter and height of summer around 3-4mm for softwood at the extremes on large boards .
step 7. spacing between deck boards. ensure there is a minimum gap of 5-6mm between each deck board. step 8. joining two boards in a run. when joining two cut deck boards together in a run, fix with screws 15mm from the end of each board, at an angle to ensure secure fixing into the joists below. note: where more than two boards are fixed in a run, a minimum 6mm gap is required for all our timber boards. step 9. protecting your timber deck
whether this applies in your case depends on whether your deck boards came with manufacturer's instructions. some do. for example, tamko deck board installation instructions state, 'when installing decking, side-to-side spacing must be a minimum of 1/8' between adjacent boards.'
in areas where the climate changes according to the seasons, you want to take deck board movement into account. for instance in buffalo, ny where you get hot summers and snowy winters, wood can move a lot and requires a different gap spacing to accommodate for the movement.
spacing the boards can be done quite simply. for a 1/8 inch space, carry a 16-penny nail that can be stuck between boards to space them apart as they are attached. keep the lines between the boards as even as possible for the best visual effect.
in general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. a 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet. the larger the deck, the larger the joists.
you can calculate the spacing so that you don't have to slice the final board lengthways. however, that doesn't always work for wide timbers like your 135mm ones. when i built my decking using 140mm wide merbau i went with about 4mm spacing. i used tiling spacers to get it consistent.
spacing for cedar deck boards - jlc-online forums . re: spacing for cedar deck boards i have never noticed a difference between rdwd and cedar as for spacing .it was moisture in the boards that was tricky . probable depends on location but a 16p was to small ,i used a 20p for years but seem to be getting bigger lately . a larger spacing 16p vrs 20p helps to hide the varitions in spacing width
the maximum distance a deck joist can span between supports is determined by the joist's dimensions and species, as well as the spacing between joists. the closer the joists are to each other, the greater the distance they're able to span safely.
the type of post you use can also affect the spacing between posts. most backyard decks using wooden posts rely on the 5-to-8-feet average for the post spacing, but modern advancements in deck building now allow for metal posts as well as composite posts to be used in place of traditional wood.
with a saw blade specifically designed for cutting composite decking and hidden all seven trust ? decking lines come consistent spacing between the boards for a online service spacing for composite decking boards - wpc composite porch
the required width of a joist depends on its spanhow far it must travel between beams or between a beam and a ledger. 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.
type of post. the type of post you use can also affect the spacing between posts. most backyard decks using wooden posts rely on the 5-to-8-feet average for the post spacing, but modern advancements in deck building now allow for metal posts as well as composite posts to be used in place of traditional wood.