Deck Board Spacing Calculator
Trex decking is available in 12 16 and 20 ft lengths with 8 ft decking available on shelf in select stores. Air dried material is typically spaced at 18 edge to edge.
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How does it work.
Deck board spacing calculator. 20 feet width of deck House 1 4 2 3 5 6 155 feet Projection of deck 15 feet 2 8 feet8 feet 2 feet 8 feet 6 feet TA 8 x 7 56 sq. Ready to start calculating how much lumber youll need for your joists. DSA Deck Surface Area in square feet Deck Length feet X Deck Width feet.
Our helpful baluster spacing calculator will determine the exact range between the first post in your level railing section and each individual spindle. First convert the inches into feet 3125 divided by 12 to get 026 feet. Can determine how much surface area of the deck that post and footing will carry.
Hopefully the slight difference in board gaps at each end of deck is acceptable compared to equal gaps and cutting the last board at an angle. Calculations provided for boards installed at a 90 degree angle. Which width of decking board would you like.
Enjoy building your deck. Use the joist span and spacing calculator below to plug in your desired type of wood the size of your joists and the required spacing. Please adjust post spacing and or beam spacing to reduce the load on the footings.
4 wide material is calculated at 3-58 and 6 at 5-58 net coverage. Width of Boards feet. A few other important factors to keep in mind are.
For TimberTech AZEK Decking its recommended to have a minimum 18 to 14 side-to-side gap between deck boards. Then multiply 026 feet by 16 feet to get 416 square feet the total area of board spacing. 90 to the joist giving a horizontal straight-across look 45 to the joist giving a diagonal slanted look to your floor boards.
Giving you on-center measurements our baluster spacing tool will help your railing meet building codes and remain symmetrical throughout. This calculator uses standard 2 x 6 pressure treated lumber for decking available at most hardware stores. It also assumes floor joists are 16 inches apart and 6 x 6 footers stumps are 8 feet apart and the deck is ground level.
Size of your deck which can be determined in either. Material quantity calculations are approximate and based on using full lengths of decking boards measuring 4200x125mm LxW with a 5mm gap between each board when installed. While this can vary depending on the size species and grade of the framing lumber a deck with 28 southern pine joists spaced 16 inches apart must be supported by a beam a maximum of every 12 feet.
Adjust building width or post spacing to reduce load. Square footage of board spacing S x Length of deck Example. Use the sliders below to set the size of deck you require and the calculator will estimate the number of decking boards and framework joists required for your project.
The current design of your deck requires a footing larger than 24 diameter. Typical spacing for KD Kiln Dried Decking is 14 for 6 boards and 316 for 4 boards. You need to calculate lineal feet to determine how much material youll need.
To learn more about deck joist sizing spacing and allowable span reference this chart. If necessary adjust number of deck boards to match in both calculations and see if different board gaps at each end of deck are acceptable compared to equal gaps and cutting the last board. Beginners Guide Post Anchor Install.
If your deck is slightly out of square different widths calculate results for both widths and set out each end to suit. To calculate the square footage of the deck multiply the two numbers together. The angle of your decking.
Length x Width in feet and inches total length of your decks perimeter Board size. Spacing in the previous formula equaled 3125 inches and the length of the example deck is 16 feet. Ft Red arrows distance between posts Blue Arrows distance between beamsoverhang Dotted lines Trib Area of each postfooting.
Lineal Feet Deck Surface Area Width of Boards. Footing larger than 24 is required. 20 ft 13 ft.
Decking How To. Necessary to determine lineal feet. Calculations assume 18 spacing edge to edge between boards.
Proper side-to-side board spacing allows for air water and debris to flow around the decking leading to a long-lasting low-maintenance deck. How To Build A Deck View All DIY. Please choose an option Only Finger Jointed boards available.
The variety of decking materials and variables is overwhelming. Lets say you want a deck that is 20 ft long and 13 ft wide. Thank you for using our decking calculator.
No spacing is required between ends of boards. If laying boards on an angle an approximate increase of 15 may be required. If your deck is slightly out of square different widths each end calculate board spacing results for both widths and set out each end to suit.
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