For this unique hybrid project in Cobourg, Ontario, we delivered a comprehensive technical drafting package that addressed both a critical structural failure and a residential expansion. The primary challenge involved detailing the repair of an approximate 20-foot section of an existing stone foundation wall that had failed due to lateral earth pressures and municipal road surcharge loading. We meticulously drafted the structural specifications for a new reinforced concrete replacement wall, including precise cross-sections detailing the footing extensions, granular backfill, and the required epoxy doweling into the remaining un-failed stone. Furthermore, our plans integrated critical drainage updates, specifying exterior filter fabric, continuous dimple board, and weep hole sleeves to mitigate future hydrostatic pressure.

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Alongside the intricate structural remediation, we provided complete architectural and structural framing drafting for the creation of a new Accessory Dwelling Unit (ADU) on the main floor. This required producing detailed demolition and proposed floor plans that optimized the existing footprint to safely accommodate a new kitchen, bathroom, and living areas. By combining the detailed foundation replacement cross-sections with the architectural ADU conversion layouts and updated floor framing plans, we provided the client and contractors with a singular, highly coordinated blueprint set that streamlined the municipal permit process for both phases of the build.