How many days prior to digging must a mark out be requested?

The correct answer is that a mark out must be requested three days prior to digging. This requirement is part of the regulations designed to ensure safety and prevent damage to underground utility lines. By requesting a mark out three days in advance, the utility companies have sufficient time to locate and mark the positions of their lines. This minimizes the risk of accidents and service interruptions that could occur if digging takes place without knowledge of existing underground installations.

Understanding this timeline is crucial for public works managers, as it helps ensure compliance with safety regulations and facilitates efficient project planning. Moreover, requesting a mark out too close to the start of digging could lead to delays in the project, potentially increasing costs and disrupting schedules.