A slab 10 m long, 8 m wide and 0.125 m (125 mm) thick needs 10 × 8 × 0.125 = 10 m³ of concrete. With a 5% wastage allowance, that's about 10.5 m³.
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Disclaimer: Calculator results are approximate and for guidance only. Actual quantities depend on your drawings, formwork, site levels and wastage. Please confirm quantities with your engineer or contractor before ordering.
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Download ChecklistFAQs
Why add a wastage allowance?
Uneven ground, formwork deflection, spillage and pump priming use extra concrete. A small allowance avoids running short mid-pour.
Should I order a little extra?
It's usually safer to order slightly more than to stop a pour, which can create cold joints. Our team will help you choose the right quantity.
How much concrete does one transit mixer carry?
Our transit mixers carry up to [X m³] per load.