What is a Utility Markout
A utility markout is the process of identifying and marking the locations of underground utilities before any digging or excavation work begins. It’s sometimes also called a utility locate. The purpose is to prevent accidental damage to utilities like:
- Gas lines
- Water pipes
- Sewer lines
- Electrical cables
- Telecommunication lines
Here’s how it usually works:
- Call Before You Dig: In the U.S., most states require you to contact a one-call center (like 811) before excavation.
- Notification: You provide the location, type of work, and timing of the excavation.
- Marking: Utility companies or locators come out and mark the ground with colored flags or paint, each color representing a different type of utility.
- Valid Period: The markout is usually valid for a certain period (varies by state), after which it may need to be renewed if the excavation hasn’t occurred.
⚠️ Why it matters: Hitting a utility can cause injuries, property damage, legal issues, and fines.