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Step 1
Choose the deck pattern you want. The most familiar patterns include L-shaped, perpendicular, corner decks and continuous decks. The pattern determines the plan used to frame the deck and construct its foundation. The pattern also determines the level of difficulty with perpendicular being the easiest and corner decks the most challenging.
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Step 2
Lay a mason line. Start at one angle of the house and extend the line to the boards containing strings for the foundation's outline. Measure each diagonal section of the layout to make sure each is a perfect square. Check the beam span charts to ensure enough space is allotted for beams, posts and joists, and that each has been sized correctly.
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Step 3
Determine the point at which the section running past the house and the beam running parallel to it meet for perpendicular decks. At this point there must be adequate surface space to nail all parts to the deck. Size the beams, posts and joists. Use these dimensions to determine the framing requirements and then calculate how much space is needed for each when framing the separate sections.
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Step 4
Position a spacing deck board at the miter corner to create substantial leeway for the joints on corner decks. Confirm that proper support exists at each end for the deck pieces.
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Step 5
Place space blocks in between the joists to create substantial support. Do this by installing a 2x4 piece of lumber at each joist to create ample surface for nailing. Then carve the joists on a 45-degree angle to prepare joist hangers with sufficient angles for the corner framing.
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Step 6
Imagine the deck extends at similar angles on each side of the house for continuous decks. Position the ledgers to undo the framing's foundation to support this decking pattern. Place the ledgers on each flank of the house.
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Step 7
Lay a beam across the entire side of the deck for one flank. For the other flank, use smaller beams parallel to the first. Finish by attaching both flanks to a second ledger connected to the house.
