How does the trapezoidal dredging volume calculator work?

The trapezoidal method computes dredging volume by calculating the cross‑sectional area using the formula: Area = (B × Δd) + (z × Δd²), where B is the bottom width, Δd is the depth difference, and z is the side slope. The volume is then Area × Length. This calculator supports multiple output units including m³, yd³, ft³, and BCF.

What is the difference between dredging and backfilling?

Dredging is the removal of material from the seabed or riverbed to achieve a desired design depth. Backfilling (or sedimentation) occurs when the existing depth is greater than the design depth, meaning material needs to be added. This calculator detects both scenarios and displays appropriate messages.

How is coordinate distance calculated?

Coordinate distance is calculated using the Euclidean distance formula: Distance = √((E₂−E₁)² + (N₂−N₁)²). This provides the straight‑line distance between two points in meters, commonly used in surveying and GIS applications.

What is Heron's formula for land area calculation?

Heron's formula calculates the area of a triangle when all three side lengths are known: Area = √(s(s−a)(s−b)(s−c)), where s = (a+b+c)/2 is the semi‑perimeter. This is useful for estimating irregular land parcel areas in surveying and civil engineering.

Dredging Volume & Cost Estimator – Trapezoidal, Unit Converter (m³/yd³/ft³/BCF), CSV Report

ERH Ultimate Calc Master – Dredging Volume, Cost Estimator & Scientific Tools

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Dredging volume (trapezoidal) · Cost estimator · Coordinate distance · Land area · Scientific engine

Dredging Volume (Trapezoidal)

📏 Length (L) m

📐 Bottom Width (B) m

📉 Existing Depth (m)

📈 Design Depth (m)

🏔️ Side Slope (z : 1) [0 for rectangle]

📊 Output Unit

m³

Copy

CSV

Dredging Cost Estimator

Total Volume (m³)

Rate per m³ (USD/BDT)

Coordinate Distance

Point A (E1, N1)

Point B (E2, N2)

0.00

meters

Irregular Land Area (Heron)

Side a (m)

Side b (m)

Side c (m)