Engineering Reference Library
Concise reference articles on municipal servicing, stormwater, grading and development engineering in Ontario.
What Is a Site Servicing Plan?
A site servicing plan shows how proposed water, sanitary and storm systems connect buildings and site facilities to accepted outlets.
What Is a Site Grading Plan?
A site grading plan shows how proposed elevations and slopes direct water safely while connecting buildings, roads and landscape areas.
When Is On-Site Stormwater Storage Required?
On-site storage is commonly needed when runoff must be detained so discharge does not exceed an accepted rate or system capacity.
Common Stormwater Review Comments
Stormwater comments often arise when criteria, calculations and drawings do not tell one consistent, traceable design story.
Why Site Grading Matters Early in Design
Early grading establishes whether entrances, accessible routes, services and drainage can work together across the site.
What Is a Major Storm Flow Route?
A major storm flow route is the planned overland path for runoff that exceeds or bypasses the minor piped system.