Site grading matters early because every building entrance, road, parking area, accessible route and landscape feature needs a compatible elevation. A concept that works in plan view may not drain or connect to municipal infrastructure when actual grades are applied.
Grades connect the disciplines
Preliminary grading tests finished-floor elevations, entrance thresholds, driveway slopes, retaining needs, service depths and drainage directions. It also reserves low points, surface storage and major flow routes. These decisions affect architectural floor levels, landscape soil depths and the amount of excavation or fill.
Late elevation changes can ripple through the whole submission. Raising a building may steepen an accessible route; lowering it may compromise a gravity sewer connection or increase flood risk. Moving a catchbasin can conflict with trees or utilities.
Parks and accessible public space
Park grading must balance drainage with usable, accessible space. Paths need compliant geometry, fields and dog off-leash areas need positive drainage, and play areas should not receive uncontrolled runoff. Splash pads, fountains and washrooms introduce fixed elevations and service points. Where a park also contains stormwater storage, public use and maintenance recovery must be considered.
Bous Engineering prepares grading plans that coordinate these functional relationships. The references on what a grading plan shows and major storm flow routes explain the resulting submission documents.
Key takeaway
Set a preliminary elevation framework before the site plan hardens. It need not be detailed construction design, but it should prove that drainage, access, buildings and services can coexist within the available grade.
Bous Engineering supports servicing, stormwater, grading and municipal approval assignments across Eastern Ontario.