Plan and profile drawings are the construction-stage documents for buried infrastructure. They cover sewer and watermain in the road right-of-way.
The plan view shows horizontal alignment, structures, and the services the work crosses. The profile view shows the vertical picture.
The profile is where the real coordination happens. It sets pipe grades, invert elevations, cover depth, and every crossing with an existing utility.
Clashes get resolved on the drawing rather than in the trench. Existing utility information is shown so the contractor knows what is already there.
Drawings are prepared to municipal design standards for construction-stage submission, then reviewed and sealed by a licensed Ontario Professional Engineer, as applicable.
The alignment comes from the site layout, so these drawings follow the servicing plan. Surface levels along the corridor are taken from the grading plan so cover over the pipe holds the whole way.
For more on construction-stage submissions, read What Information Does a Civil Engineer Need From the Architect? .