How Much Concrete for a Deck Footing?
A 2×2 foot square footing at 12 inches deep is a common specification for deck support posts in areas with shallow frost lines. This size provides adequate bearing surface for typical residential deck loads. Most decks require multiple footings, so multiply this calculation by your post count.
Results
Total Volume0.16cubic yards
Total Volume4.4cubic feet
80 lb Bags8bags
60 lb Bags10bags
40 lb Bags15bags
Net Volume (before waste)0.15cu yd
Waste Allowance10%
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