EXCAVATION & PAVING · FIELD TOOL

Soil Disposal Calculator

Spoil to dispose = excavation − soil kept for backfill. Of 300 m³ dug with 80 m³ kept, 220 m³ goes away: 275 m³ loose, about 396 t at 1,800 kg/m³, 28 loads of 10 m³. At 10 per tonne tipping and 100 per load haulage, disposal costs about 6,760.

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Spoil
m³
m³
kg/m³
Disposal
m³
/t
Disposal cost 6,760Disposal cost 6,760Tipping fees3,960Haulage2,800myconstructioncalculator.com
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Results

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Disposal cost
6,760
Spoil to remove (bank)220.0 m³
Loose volume275.0 m³
Weight396.0 t
Truck loads28 loads
Tipping fees3,960
Haulage2,800
Cost per bank volume30.73 per m³

Contaminated, hazardous or mixed construction waste is charged at different rates and may need testing first. Default fees are placeholders.

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Working
  1. Spoil = 300.0 − 80.0 kept = 220.0 m³ (bank)
  2. Loose = × (1 + 25%) = 275.0 m³; loads = ⌈275.0 ÷ 10.0⌉ = 28
  3. Weight = bank × density = 396.0 t
  4. Tipping = 396.0 t × 10.00 = 3,960; haulage = 28 × 100.00 = 2,800

Results are estimates for planning and material ordering only. They are not a substitute for structural design or approval by a qualified engineer. Read the full disclaimer.

Formulas

Spoil (bank)   = excavated − kept on site
Loose          = spoil × (1 + swell %)
Weight         = spoil × bank density
Loads          = ⌈loose ÷ truck capacity⌉
Cost           = weight × tipping fee + loads × haul cost per load

Worked example

300 m³ excavated, 80 m³ kept for backfill, common earth (1,800 kg/m³, 25% swell), 10 m³ trucks, tipping 10 per tonne, haulage 100 per load:

  1. Spoil = 300 − 80 = 220 m³ bank → 275 m³ loose
  2. Weight = 220 × 1.8 = 396 t
  3. Loads = ⌈275 ÷ 10⌉ = 28
  4. Cost = 396 × 10 + 28 × 100 = 3,960 + 2,800 = 6,760

Spoil weight per 100 m³ in the ground

Material Tonnes per 100 m³
Sand 160–170
Common earth 170–190
Clay 180–200
Rock 240–270

Fees in the calculator are placeholders: use your local landfill and haulier rates.

Frequently Asked Questions

How do I estimate soil disposal cost?

Work out the tonnes leaving site (bank volume × density) and multiply by the tipping fee per tonne, then add haulage per truck load. Landfills usually charge by weight; hauliers by load or by hour.

How many tonnes is a cubic metre of soil?

About 1.6–2.0 tonnes in the ground for most soils. Clean inert soil is often charged much less than mixed or contaminated material.

How can I reduce disposal cost?

Reuse as much as possible for backfill and landscaping, keep clean soil separate from waste, and look for sites that accept clean fill at low or no cost.

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