How Much Concrete for a Fence Post Footing?
An 18×18 inch footing at 24 inches deep provides excellent stability for corner posts, gate posts, or posts in windy areas. This deeper footing extends below typical frost lines in many regions, preventing heaving. The larger size resists wind loads on privacy fences and gates.
Results
Total Volume0.18cubic yards
Total Volume4.95cubic feet
80 lb Bags9bags
60 lb Bags11bags
40 lb Bags17bags
Net Volume (before waste)0.17cu yd
Waste Allowance10%
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