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Post Hole Calculator helps contractors and tradespeople accurately size, spec, and estimate materials and systems.

Формула

Hole Depth = 1/3 to 1/2 of post height (min 2 ft below frost line)

Водич корак по корак

  1. 1Determine post height, calculate hole depth, size for concrete
  2. 2Apply the formula using your project measurements
  3. 3Add required safety factors or waste allowances per code

Worked Examples

Инпут
8 ft post, 3 ft frost line depth
Резултат
Hole Depth = max(8/3, 3) = 3 ft, 10 inch diameter

Common Mistakes to Avoid

  • Not applying code-required safety factors or derating
  • Forgetting to account for waste and cut losses in material estimates

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