Plan and Profile drawings (P&P) are engineering drawings that show both the plan view (top-down layout) and the vertical profile (longitudinal section) of a proposed municipal sewer or watermain installation, typically within a road right-of-way or a servicing easement. The plan view shows horizontal alignment relative to property lines, existing utilities, and road geometry. The profile view shows vertical alignment, invert elevations, grades, depths of cover, and connections to manholes and service laterals.
In Ontario, Plan and Profile drawings are required by municipalities for construction-stage engineering submissions on serviced subdivision and infill development projects. They are the drawings that contractors use to install the pipe and must meet the municipality’s engineering design standards for grades, cover depths, utility conflict clearances, and standard construction details.
P&P drawings are sealed by a licensed P.Eng. and are typically submitted as part of a Development Agreement engineering package, following Site Plan Approval or draft plan registration. They are distinct from servicing plans prepared at the SPA stage — they are the construction-ready drawings that bring the design to the field.