How do I calculate my deck?

How do I calculate my deck?

The first step for answering “how to calculate how much decking I need” is to determine your deck’s square footage, or area, by taking the length of your deck times the width (L x W). EXAMPLE: For a deck that is 16 feet long and 12 feet wide, multiply 16 by 12. This gives you 192 square feet, your deck’s total area.

How deep should a deck Stump be?

Step 3: Set the stumps Dig the holes 300 x 300mm square and 600mm deep. Dig them so that when the stumps are centred in them, the outside edges of the stumps are flush with the string line. Before setting the stumps in the holes, place a timber sole plate in the bottom of each hole.

What size joists do you use for decking?

Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.

Do decks need footings?

Large decks that are attached to the house should always have footings because they act to spread the heavy load of the deck from the surface of a support post over a large surface of the soil so the ground can adequately support it.

How much is it to build a 12 foot deck?

The average cost of constructing a deck is \$25 per square foot, with most homeowners spending anywhere from \$4,380 to \$10,500 on the project….Cost to Build A Deck By Size.

Deck Size Square Feet Average Cost
10×12 120 \$2,000 – \$4,200
12×12 144 \$2,150 – \$5,040
12×20 240 \$3,400 – \$8,400
14×20 280 \$4,000 – \$9,800

What is the best joist size for a deck?

How far apart should deck post be?

Ideal deck post spacing is 8 feet or less. The distance between deck support posts depends on the type of wood species used and the size of the joist and beam. There is no minimum span, and maximum spans can reach up to 15′.