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Footing Design Considerations

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2:58
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What happens here

The presenter clarifies that the footing's diameter is determined by the total weight of the deck it supports, not by the size of the post. Conversely, taller decks require thicker posts for stability, while shorter decks can use thinner posts, demonstrating this with different post sizes. This distinction is crucial for ensuring the structural integrity and longevity of the deck.

Goal: Properly size deck footings and posts based on structural requirements.

Tools and materials

  • Concrete Footing — Representing the base support for the post
  • Post — Demonstrating how post size relates to deck height

What they say

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5/8 or more. The rim joist is the opposite. Two at the bottom, 3/4 at the top. Ledger can get installed anywhere in this green zone. If I install this ledger too low, it can split [snorts] your rim joist. Footing diameter is determined by the weight of the deck, not the size of your post. Taller decks need thicker posts. Shorter decks can get thinner posts. Measure off structure and make a mark for your hole. Dig out your footing below your frost depth. Hand digging's hard. Augers are a lot easier. Pour concrete. Either bury a post 1 ft minimum, wet set

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