Dock Door Requirement Planner
Size dock doors against a realistic utilization target, not a 100%-occupancy assumption that systematically undersizes the door count.
Door capacity
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Based on your results, these related decisions are available.
How this works
Sizing dock doors as if every door is loading or unloading a truck 100% of the operating day ignores real-world staging, paperwork, and waiting time between trucks. Required door-hours is truck volume times average dwell time; each door's realistic available hours is operating hours times a utilization target, not the full day.
Key terms
- Utilization target: the realistic productive door-time share of the operating day, typically 70 to 85%, not 100%.
Assumptions
- Uniform dwell time across trucks
Limitations
- Single facility, not a multi-shift or inbound/outbound door-allocation plan
Sources
Standard dock-door / cross-dock capacity-sizing practice, mirroring Forklift Fleet Sizing's utilization-target pattern.
Worked example
Sizing against a 100%-utilization assumption gives 4 doors for 60 required door-hours in a 16-hour day. The realistic 70%-utilization calculation requires 6 doors, a 2-door undersizing the naive assumption would miss, causing truck queuing.
Common use cases
- Sizing a warehouse or DC's dock doors for planned truck volume
- Checking whether current door count can handle a growth scenario
- Justifying a dock-expansion request with realistic utilization math