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Aggregate / Subbase Calculator

Calculate the compacted volume, loose volume and weight in tonnes for a subbase or aggregate layer from its thickness, compaction factor and density.

Subbase & granular layers

Aggregate / Subbase Calculator

Calculate the compacted volume, the loose volume and the weight in tonnes for a subbase or aggregate layer from its thickness, compaction factor and density.

Instant Results & Bill of Quantities
Compacted volume (m³) 0.00 م³ Layer thickness (mm)
Loose / spread volume (m³) 0.00 م³ Compaction factor
Weight (tonnes) 0.00 طن Density (t/m³)

Instant Results & Bill of Quantities

Item Weight / Quantity Formula & Specifications

Result type: Material Consumption Estimate

Formulas & Assumptions

Formulas used

  • V_compacted = A × t × (1 + Waste)Compacted volume
  • V_loose = V_compacted × CompactionLoose / spread volume
  • W = V_compacted × DensityWeight in tonnes

Assumptions & reference values

  • Editable assumptionDefault compaction factor 1.25, adjustable to the aggregate and compaction method.
  • Editable assumptionDefault density 2.1 t/m³ for compacted aggregate.

Notices: This result is intended for quantity estimation. Verify quantities against approved drawings and project specifications before procurement or construction.

This calculator provides quantity and preliminary cost estimation. Structural design, material specifications and final quantities must be verified against project drawings, specifications and applicable engineering standards.