Free online Foundation Calculator. Calculate soil excavation pit volumes, sand filling, PCC beds, and RCC column footings.
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How to Use Foundation Calculator
Enter the footing length, width, and excavation depth.
Specify sand filling thickness and PCC bed thickness.
Input the RCC footing pad dimensions.
Select rebar configurations to view excavation, concrete, and steel results.
Excavation soil volume calculations
Soil excavation volume is computed based on pit footprint dimensions:
Excavation Volume = Length × Width × Depth
We add a 10% volume allowance for manual sloped excavation or machinery errors.
PCC Base Foundations & Footings
- **Sand Bedding**: Standard 3-inch thick compacted sand bed is laid first to absorb moisture.
- **PCC Bed**: 3-inch M10 concrete mix is laid next.
- **RCC Pad**: The main reinforced footing pad (typically 12" thickness) is poured on top.
Frequently Asked Questions
What is PCC in foundations?
PCC stands for Plain Cement Concrete. A thin layer of PCC (usually M10 mix, 3-4 inches thick) is laid at the bottom of excavation pits to create a clean base for steel footings.
What depth is safe for residential footings?
Safe isolated footing excavation depths depend on soil bearing capacity, but a minimum of 4 to 5 feet is standard for residential houses.