Which factor should not influence the excavation's plan?

The size of the excavation equipment should not influence the excavation's plan because the planning process is primarily based on safety, site conditions, and operational efficiency rather than the specific machinery being used. When creating an excavation plan, factors such as soil conditions, workforce skills, and changing weather forecasts are critical to ensure the safety and success of the operation.

Soil conditions directly impact how the excavation is carried out, including techniques for shoring and sloping. Workforce skills ensure that the team involved is adequately trained to handle specific tasks and respond to any hazards. Weather forecasts can affect the stability of the excavation site and the safety of workers, thus requiring adjustments in planning. While the size of equipment may play a role in operational logistics, it is not a primary factor that determines the fundamental aspects of the excavation's plan.