MTE's Involvement
MTE was proud to provide civil engineering for the development of Lawrence Heights, phase 1.
At the outset of the project, our Civil team reviewed the draft plan conditions for the site as they related to the blocks we were designing. Our team then collaborated with the Consulting Engineer that was responsible for the overall Draft Plan approval, providing input to help resolve the draft plan conditions that affected our scope.
Our Hydrogeological professionals then developed a strategy to address groundwater concerns. MTE carried out a Hydrogeological Study to characterize the existing groundwater conditions including the location of the water table in relation to the finished grade for the basement floor elevations. Our team also determined the suitability of the subsurface soils for infiltration and to estimate water quantity contributions for long-term groundwater management. The study involved the installation of 11 monitoring wells, which helped us outline several strategies based on the type of unit being built. Methods of managing this included waterproofing of foundation walls, and installation of weeping tiles and sump pumps. The Hydrogeological Investigation was completed in accordance with the City of Toronto Private Water Discharge Approval Application that came into effect August 2018.
Our Civil team also prepared the detailed site engineering design, including design of the onsite watermain, and sanitary and storm sewers to meet Ontario Building Code and City of Toronto guidelines. The grading design ensured the appropriate site drainage was achieved, and that stormwater quantity and quality controls are in accordance with City standards. Our stormwater quality control solution involves treatment train approach using roof downspout disconnections, vegetated buffer / filter strips, and oil grit separators and / or filtration units.