Which component of a pipe can have its width set to the diameter of the pipe?

• A. Inlet
• B. Centerline
• C. Joint
• D. Manhole

Answer: (B)

The thing being tested is how the pipe’s display or envelope is controlled in the component that represents the line itself. The centerline component is the one whose width can be set to match the pipe’s diameter, so the drawn pipe accurately reflects its true size in plan and cross-section views. Inlets, joints, and manholes represent fixed physical pieces with standard dimensions that aren’t typically tied to the pipe diameter in the same way, so their widths aren’t set to the pipe’s diameter. By making the centerline width equal to the diameter, the pipe’s overall size is consistently represented throughout the design.