Enter Canal Lining Inputs
Formula Used
H = Flow Depth + Freeboard
Side Length = H × √(1 + m²)
where m is side slope in horizontal to vertical form.
Total Lining Area = (Bed Width + Left Side Length + Right Side Length) × Canal Length
Concrete Volume = Total Lining Area × Lining Thickness
Adjusted Volume = Concrete Volume × (1 + Wastage / 100)
Dry Volume = Adjusted Volume × Dry Volume Factor
Cement Volume = Dry Volume × Cement Ratio / Total Mix Ratio
Sand Volume = Dry Volume × Sand Ratio / Total Mix Ratio
Aggregate Volume = Dry Volume × Aggregate Ratio / Total Mix Ratio
Cement Bags = (Cement Volume × 1440) / Bag Weight
How to Use This Calculator
- Select metric or imperial mode.
- Enter canal length, bed width, flow depth, and freeboard.
- Provide left and right side slopes in H:1V format.
- Enter lining thickness and wastage percentage.
- Set dry volume factor and concrete mix ratio.
- Enter cement bag weight and concrete density.
- Click the calculate button to display results above the form.
- Use the CSV and PDF buttons to export the calculated report.
Example Data Table
| Item | Example Value |
|---|---|
| Canal Length | 120 m |
| Bed Width | 2.50 m |
| Flow Depth | 1.80 m |
| Freeboard | 0.30 m |
| Left Side Slope | 1.5 : 1 |
| Right Side Slope | 1.5 : 1 |
| Lining Thickness | 0.10 m |
| Wastage | 5% |
| Mix Ratio | 1 : 2 : 4 |
| Total Lining Area | 1,208.59 m² |
| Adjusted Concrete Volume | 126.90 m³ |
| Cement Requirement | 804.01 bags |
FAQs
1. What does this canal lining quantity calculator estimate?
It estimates lined surface area, concrete volume, dry material volume, cement bags, sand, aggregate, top width, wetted perimeter, and concrete weight for a trapezoidal canal section.
2. Why is freeboard included in the calculation?
Freeboard extends the lined depth above the water level. Including it gives a more practical quantity estimate for full-height lining and helps avoid underestimating the required area and concrete volume.
3. How are the side slopes handled?
Each side slope is entered as horizontal to one vertical. The calculator converts that slope into actual sloping side length using the lined depth and then multiplies by canal length.
4. What is the purpose of the wastage percentage?
Wastage adds a safety allowance for losses during batching, placing, handling, uneven surfaces, and site variation. It helps project teams order more realistic construction quantities.
5. Why is a dry volume factor used?
Dry ingredients occupy more space than finished wet concrete. The dry volume factor converts wet concrete demand into approximate total dry material volume for mix proportioning.
6. Can I use different mix ratios?
Yes. You can enter any cement, sand, and aggregate proportions. The calculator splits the dry material volume according to your chosen ratio and then estimates cement bags.
7. Does this calculator work in imperial units?
Yes. Choose imperial mode and enter all linear dimensions in feet. The calculator converts values internally and returns quantities in square feet and cubic feet.
8. Is this suitable for final site billing?
It is best for planning, checking, and procurement estimates. Final billing should still follow project drawings, specifications, lining details, joints, overlaps, and site measurements.