Fixed loading/unloading duration

This constraint defines the minimum amount of time a resource must spend at the depot when performing a loading or unloading operation. This base time can be supplemented by the additional duration specified in the Loading/Unloading duration per unit constraint.

In other words, the total time spent at the depot = Minimum time at depot + (Time per unit × Number of units)

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Example

• Minimum loading time at depot: 10 minutes

• Loading duration per unit: 2 minutes

• Number of units to load: 5

Calculation: Total time at depot = 10 minutes + (2 × 5) Total time at depot = 20 minutes

In this case, the resource will spend 20 minutes at the depot before leaving for the next planned visit.