A standard concrete mixer truck holds 8-11 cubic yards of cement.

A typical concrete truck's drum capacity ranges from 8 to 11 cubic yards (6-8 m³), with 10 yards being the most common. Weight limits (often ~40,000 lbs gross) and local regulations may reduce actual load. Partial loads (e.g., 5-7 yards) are also available for smaller projects.

Key Factors Affecting Concrete Truck Capacity

  • Drum size: Standard drums hold 10-11 yards; smaller "mini mix" trucks carry 3-5 yards.
  • Weight limits: Concrete weighs ~4,000 lbs/yard. Trucks avoid exceeding legal axle weight restrictions.
  • Mix design: Heavy aggregates (e.g., gravel) reduce volume capacity compared to lightweight mixes.
  • Local laws: Some regions enforce stricter weight or volume limits for transport.

Concrete Truck Sizes & Capacities Compared

Truck Type Drum Capacity (cubic yards) Typical Load Size Best For Weight (loaded)
Standard Mixer 10-11 8-10 yards Driveways, foundations, large slabs 35,000-40,000 lbs
Mini Mix Truck 3-5 3-4 yards Sidewalks, small patios, repairs 15,000-20,000 lbs
Volumetric Mixer Varies (on-demand) 1-10 yards Remote sites, custom mixes, partial loads Depends on load

How to Calculate How Much You Need

  1. Measure area: Length × Width × Depth (in feet) for slabs/footings.
  2. Convert to yards: Divide cubic feet by 27 (1 yard = 27 ft³).
  3. Add 10% extra: Account for spillage, uneven terrain, or formwork gaps.
  4. Check truck limits: Example: A 20 ft × 20 ft × 4-inch slab needs ~5 yards (fits in one standard truck).

What If You Need More Than 11 Yards?

  • Multiple trucks: Schedule deliveries 30-60 minutes apart to avoid cold joints.
  • Concrete pumps: Required for large pours (e.g., 20+ yards) to distribute efficiently.
  • On-site mixing: Volumetric trucks or batch plants for continuous supply.

Common Mistakes to Avoid

  • Overordering: Unused concrete hardens quickly; disposal fees may apply.
  • Underestimating: Short loads (partial trucks) cost more per yard.
  • Ignoring access: Trucks need 10+ ft width and stable ground to unload.
  • Weather delays: Hot/cold temps affect setting time; plan pours accordingly.