Bedding & Spoil
Materials Calculator
Instantly calculate excavation volumes for pipes, pits and below-ground structures. Built on AS/NZS standards — trusted by Australia's best estimators.
You've used your free calculation. Enter your business details to keep going — it takes 30 seconds.
Pit depths use avg depth to IL. Defaults to 1.0m if not entered.
Line-by-line results appear here as you enter values above.
This calculator gives you excavation volumes. For a complete, submission-ready hydraulic estimate — every pipe, pit, GPT, OSD system and civil reinstatement item individually priced from your actual drawings — SNZ has you covered. 300+ projects nationally. 63 five-star reviews. Within 1 week for standard civil stormwater scopes.
Fill in the form and our team will be in touch within a few hours. No obligation, no hidden costs.