Concrete Footing Calculator (Continuous Wall Footings)
calc_concrete_footingRead-only
Volume for continuous trench/wall footings where width is in inches and length runs the full perimeter. Formula: Cubic yards = Length(ft) × Width(in)/12 × Depth(in)/12 ÷ 27 × (1 + waste%).
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| depth_in | No | Footing depth (in); default 8 | |
| width_in | No | Footing width (in); default 16 | |
| length_ft | No | Total footing length (ft); default 120 | |
| waste_pct | No | Waste allowance (%); default 10 | |
| bag_yield_cf | No | Bag yield (cu ft/bag); default 0.6 |