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    Construction & Electrical

    Pipe Trench Backfill Calculator

    Calculate rectangular trench excavation and deduct one cylindrical pipe displacement. Assumes one round pipe and uniform trench dimensions; bedding and manholes are not deducted. This browser-local calculator updates from numeric inputs and shows a labelled breakdown without uploading your data.

    MAKE IT SIMPLE
    Calculation assumptions

    Assumes one round pipe and uniform trench dimensions; bedding and manholes are not deducted.

    Result

    Worked examples

    Trench length (m) 20 · Trench width (m) 0.6 · Trench depth (m) 1.2 · Pipe outside diameter (mm) 200

    First calculated quantity: 14.4000 m³

    Calculate rectangular trench excavation and deduct one cylindrical pipe displacement. Assumes one round pipe and uniform trench dimensions; bedding and manholes are not deducted.

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