What does a yellow mark out line mean?

What does a yellow mark out line mean?

• A. Gas/Steam
• B. Electric
• C. Water
• D. Proposed Excavation

Answer: (A)

Color-coding for underground utility markings uses a standard set of colors so crews can quickly identify what lies beneath. A yellow mark indicates gas or steam lines. So if you see yellow paint or markers, treat the area as containing a gas or steam line and avoid digging there until the line is located and work is coordinated with the utility. This color code helps prevent damaging gas mains or connections, which can cause leaks or explosions. For reference, electric lines are marked red, water lines blue, and marks for proposed excavation are white. Always call 811 before you dig and have the area properly located.

Color-coding for underground utility markings uses a standard set of colors so crews can quickly identify what lies beneath. A yellow mark indicates gas or steam lines. So if you see yellow paint or markers, treat the area as containing a gas or steam line and avoid digging there until the line is located and work is coordinated with the utility. This color code helps prevent damaging gas mains or connections, which can cause leaks or explosions. For reference, electric lines are marked red, water lines blue, and marks for proposed excavation are white. Always call 811 before you dig and have the area properly located.