Dredging Volume & Cost Estimator – Trapezoidal Channel, Unit Converter, CSV Report

Dredging Volume & Cost Estimator – Trapezoidal & Rectangular Channels

Professional dredging design tool · Unit converter (m³, yd³, ft³, BCF) · CSV · PDF · Batch · 2D profile

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📐 1. Why Accurate Dredging Volume Calculation Matters

Dredging projects require precise volume estimation for budgeting, tendering, and environmental compliance. Overestimation wastes money, underestimation leads to project delays. This calculator uses the trapezoidal formula (or rectangular when side slope = 0):

Area = B×D + z×D²
Volume = Length × Area
Where B = bottom width, D = dredging depth, z = side slope (H:V).

It supports multiple output units and generates professional reports for tender submission.

🚀 2. Live Dredging Volume & Cost Calculator

Channel Length (L) m

Bottom Width (B) m

Dredging Depth (D) m

Side Slope (z : 1) (0 for rectangle)

Output UnitCubic Meters (m³)Cubic Yards (yd³)Cubic Feet (ft³)Lakh Cubic Feet (BCF)

Cost per m³ (USD)

Batch CSV Upload

✅ CSV format: Length, BottomWidth, Depth, SideSlope, CostRate (optional)

Get PDF Report via Email

CSV Template

📊 2D Channel Cross‑Section Profile

📈 Volume Trend & History

📂 3. How to Use the Calculator

1. Manual mode: Enter channel length, bottom width, dredging depth, side slope (0 for rectangular).
2. Select output unit: m³, yd³, ft³, or BCF (Lakh Cubic Feet – common in Bangladesh).
3. Cost rate: Enter cost per cubic meter (USD) to get total project cost.
4. Compute: Click "Compute Volume" – results show volume, cost, and a 2D profile.
5. Batch CSV: Upload multiple rows to process many projects at once.
6. PDF Report: Download a professional report with the 2D profile image.
7. History: All calculations saved locally; export or clear anytime.

📈 4. Real‑World Example

Mongla Port Approach Channel, Bangladesh
Length = 800 m, Bottom width = 60 m, Dredging depth = 2.0 m, Side slope = 2:1, Cost = $6/m³.
Cross‑section area = 60×2 + 2×2² = 120 + 8 = 128 m²
Volume = 800 × 128 = 102,400 m³ ≈ 102,400 m³ → 102,400 × 0.0353 = 3,615 BCF
Total cost = $614,400.
The tool will compute these values instantly and draw the trapezoidal profile.

❓ Frequently Asked Questions

❓ What is BCF (Lakh Cubic Feet)?

BCF stands for "Lakh Cubic Feet" (1 BCF = 100,000 ft³). It is widely used in the Bangladesh dredging industry for contract tenders.

❓ Can I use this for rectangular channels?

Yes, simply set side slope = 0. The calculator will use the rectangular area formula (B × D).

❓ Is the tool free?

Yes, completely free. Batch processing supports up to 100 rows per CSV.

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© ERH Dredging Calculator – Free tool for engineers. All data processed locally.