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Deck boards, joists and screws
Materials for a simple rectangular deck.
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How this works
Board rows = deck depth × 12 ÷ (board width + gap). Joists = deck length × 12 ÷ spacing + 1. Screws = rows × joists × 2. Check joist and beam spans against AWC DCA 6.
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Related guide
Decks & patios guide
Choose between a raised deck and ground-level patio by comparing materials, structure, drainage, upkeep, and the way you plan to use the space.