Soakaway Crate Calculator

Calculate soakaway crate quantity, excavation and membrane for rainwater drainage projects.

Soakaway crates for a 2m by 1m pit at 40mm

For a soakaway pit measuring 2 metres by 1 metres at 40mm deep, this estimate includes crate count and storage volume using the default crate size below.

  • Excavation volume0.08 m³
  • Soakaway crates1
  • Geotextile membrane2.46 m²

Results - Soakaway Crate Calculator

  • Excavation volume0.08 m³
  • Soakaway crates1
  • Geotextile membrane2.46 m²

How this soakaway crate calculator works

It uses the excavation dimensions to estimate storage volume, crate count and geotextile membrane requirement for a practical soakaway layout.

Disclaimer

Material quantities shown are estimates for guidance only. Although typical UK wastage and compaction allowances have been included, actual requirements may vary depending on site conditions, installation methods, and material differences. Please confirm quantities with your installer or supplier before ordering. We accept no liability for inaccuracies, financial loss, or delays arising from the use of these estimates.