Structural Engineering for Sunroom Addition – Burlington
This project involved full structural engineering design for a proposed sunroom addition to an existing two-storey residential dwelling. The addition was designed to integrate with the existing structure while meeting current Ontario Building Code (OBC 2024) requirements.
Parsways provided structural analysis, foundation design, and detailed connection engineering to support the new addition, addressing load transfer, constructability, and long-term performance.
Location: Burlington, Ontario
Completion: 2025
Sector: Residential
1. The Challenge
Integrating the proposed sunroom with the existing house structure required careful coordination to maintain a continuous and reliable load path. The existing building elements had to be verified to safely support the new structural connections.
Foundation and Support Constraints:
The addition required an independent foundation system capable of supporting vertical and lateral loads without overstressing existing footings. Soil bearing assumptions and frost-depth requirements had to align with OBC provisions.
Site and Geometry Limitations:
Tight site conditions, property line clearances, and spatial separation requirements influenced the structural layout, foundation spacing, and opening sizes.
Code Compliance:
All structural components needed to comply with OBC 2024 and applicable CSA standards, including snow, wind, and seismic loading specific to the Burlington area.
2. The Engineering Solution
Parsways developed a complete structural design package tailored to the proposed addition and existing dwelling.
a) Structural Analysis:
Design loads were established in accordance with OBC 2024, accounting for residential live loads, snow loads, wind pressures, and seismic parameters.
b) Foundation Design:
A helical pile foundation system was engineered to support the sunroom, providing controlled load transfer, uplift resistance, and compatibility with site constraints.
c) Framing and Connections:
Pressure-treated wood framing, drop beams, ledger connections, and joist hangers were detailed to ensure continuity between the new addition and existing structure.
d) Construction Detailing:
Detailed sections, elevations, and connection details were prepared to guide construction and ensure alignment with code and manufacturer requirements.
3. The Outcome
The project resulted in a fully engineered sunroom addition that integrates cleanly with the existing dwelling. The structural design established clear load paths, a stable foundation system, and code-compliant connections, enabling safe construction and long-term durability in accordance with OBC 2024 and applicable CSA standards.