Bedding Calculator
Calculate bedding or pipe-zone material from trench length, bedding width, and bedding thickness. Add waste for over-excavation and compaction settlement.
Enter your values, then press Calculate.
How to calculate
Enter the pipe run length, the width of the bedding (often trench width), and the bedding thickness below or around the pipe. Thickness is usually in inches on the detail.
Formula
Volume (ft³) = length (ft) × width (ft) × thickness (ft). Cubic yards = ft³ ÷ 27. Waste multiplies the neat volume.
Common use cases
- Class B or C bedding takeoffs
- Pipe-zone sand or gravel
- Checking a bedding detail against trench width
- Haul tickets vs plan quantity
Worked example
Example: 100 ft of 24 in wide, 6 in thick bedding
1. Neat volume
100 ft × 2 ft × 0.5 ft = 100 ft³
2. Cubic yards
100 ÷ 27 = 3.7037 yd³
Related calculators
- Trench Excavation CalculatorConvert trench length, width, and depth into cubic yards of excavation.
- Pipe Slope CalculatorConvert elevation drop and run into percent grade, ratio, and inches per foot.
- Backfill CalculatorEstimate trench backfill cubic yards after subtracting pipe displacement.
- Pipe Volume CalculatorCalculate internal volume of a circular pipe in cubic feet and gallons.
FAQ
Is this the full pipe zone?
Only if you enter the pipe-zone thickness from the detail. For bedding-only, use the thickness below the pipe invert.
Should I subtract the pipe OD?
This estimate uses a rectangular prism. It does not subtract pipe displacement. That is conservative for ordering material.
Disclaimer
These calculators are estimating tools for planning and field checks. They are not a substitute for approved plans, specifications, licensed professional engineering, or governing standards. Confirm densities, waste factors, and yields with your supplier and project documents.