Expert Guide
Concrete Calculators
Ready Mix Concrete (RMC) Calculator – Truck Loads
Quality Inspector
Calculate the total volume of Ready Mix Concrete (RMC) needed for your slab or foundation and estimate the number of transit mixer truck loads required.
📐 Formula & Method
Truck loads are calculated by dividing the total volume (plus a typical 3% wastage for RMC) by the transit mixer capacity.
Truck Loads = (Total Volume × 1.03) / Truck Capacity
📋 Worked Example
For 20 m³ of concrete using 6 m³ trucks: • Volume with 3% wastage = 20.6 m³ • Trucks = 20.6 / 6 = 3.43 trucks (order 4 trucks)
❓ Frequently Asked Questions
The most common transit mixer capacity in major cities is 6 cubic metres, though 7 and 8 cubic metre trucks are also used.
Some concrete always remains in the truck drum and pump pipes. Ordering 3-5% extra ensures you don't run short at the very end.
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