Which symbol denotes an underground oil or gas pipeline?

Which symbol denotes an underground oil or gas pipeline?

• A. Zig-zag solid or dash lines
• B. Solid line
• C. Dash line
• D. Dotted line

Answer: (C)

Line styles on maps and drawings tell you how you’ll encounter a feature in reality. A dashed line signals a feature that is hidden from view, such as something buried underground. That’s why underground oil or gas pipelines are shown with a dashed line—it communicates that the pipe runs beneath the surface and isn’t visible at ground level. A solid line would usually represent something visible above ground, while a dotted line often denotes an approximate or proposed location. A zig-zag pattern isn’t a standard symbol for buried utilities. So the dashed line is the best choice because it clearly indicates an underground, buried pipeline.

Line styles on maps and drawings tell you how you’ll encounter a feature in reality. A dashed line signals a feature that is hidden from view, such as something buried underground. That’s why underground oil or gas pipelines are shown with a dashed line—it communicates that the pipe runs beneath the surface and isn’t visible at ground level. A solid line would usually represent something visible above ground, while a dotted line often denotes an approximate or proposed location. A zig-zag pattern isn’t a standard symbol for buried utilities. So the dashed line is the best choice because it clearly indicates an underground, buried pipeline.