What is the most preferred method for locating a buried piping when one position of the facility is known?

• A. Trace Method
• B. Depth Determination Method
• C. Search Method
• D. House Connectors

Answer: (A)

When you know one position of a buried piping, the best way to locate the rest of its route is to trace the line from that known point. The trace method uses a transmitter (or a tracer wire system) on the pipe and a receiver at the surface to follow the path, allowing you to map the entire route, confirm directions, identify intersections, and estimate depth at multiple points as you go. This approach provides a continuous, reliable picture of where the pipe runs, reducing the need for guesswork or multiple digs.

Depth determination is useful for finding how deep the pipe sits at a single point, but it doesn’t give you the full route. The search method is typically used when you have no known position and must locate the line by probing or scanning the area. House connectors are components of service lines, not a method for locating buried piping.