Efficient concrete delivery is critical for large construction projects.
Properly sizing your fleet of mixer trucks ensures a smooth operation.
Here's a simplified approach to calculating the number of trucks needed based on batching plant capacity and truck efficiency.
Key Formulas
Formula 1:
n=Qn/Qh
Where:
n = Number of required trucks
Qh = Batching plant capacity (m³/h)
Qn = Transport efficiency of one mixer truck (m³/h)
Formula 2:
Qn = kn ×kt ×Q × (1−β) / T
Where:
kn = Fill factor (0.8 to 1)
kt = Time utilization factor (0.8 to 1)
Q = Mixer truck capacity (m³)
β = Unloading residual (typically 1%)
T = Transport cycle time (hours)
Example Calculation
Project Details:
Batching Plant Capacity = 36 m³/h
Mixer Truck Capacity = 12 m³
Cycle Time = 1.5 hours
Step 1: Calculate Transport Efficiency per Truck (Qn)
Using Formula 2,assume kn = 0.9,Kt = 0.8,and β = 0.01
Qn=0.9×0.8×12×(1−0.01)/1.5=5.7 m³/h
Step 2: Calculate the Number of Trucks Needed (n)
Using Formula 1:
n = 36 / 5.7 ≈ 6.3
Round up to 6 trucks.
Practical Tips
Buffer Trucks: Add extra trucks to account for delays like traffic or breakdowns.
Adjust for Project Phases: Truck needs may change as the project progresses, so keep monitoring and adjust fleet size as required.
If you have any questions please feel free to contact us!!
