What it means in practice
Practical capacity accounts for ordinary constraints such as maintenance, availability, quality checks and necessary preparation. It differs from a theoretical maximum that assumes uninterrupted perfect operation. Name the unit, period and service standard. The constraint may be a person, machine, supplier or decision rather than total headcount. More demand does not automatically increase the capacity of that limiting step. Measure capacity for a consistent type of work. A team completing simple jobs cannot necessarily deliver the same number of complex jobs in the same time. Rework, interruptions and missing inputs can reduce usable capacity. Before adding staff or equipment, observe whether the suspected constraint actually has a persistent queue and whether improving it would increase completed output.
A fictional worked example
A fictional team can complete 40 standard jobs each week while maintaining its agreed quality checks and normal working hours.
A useful question
Which step limits what the whole business can deliver reliably?
Read the practical guide