Structural Design for Custom Timber-Framed Residence – Trent Hills
Parsways Inc. provided structural engineering services for a custom residential dwelling incorporating timber framing elements in Trent Hills, Ontario. The scope included structural design, load path coordination, and integration of timber and conventional framing systems.
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The design was prepared in accordance with the Ontario Building Code (OBC 2024) and applicable CSA standards as part of a building permit submission package.
Location: Trent Hills, Ontario
Completion: January 2026
Sector: Residential
1. The Challenge
The project combined conventional wood framing with exposed timber framing elements, requiring careful coordination of multiple structural systems.
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Hybrid Structural System:
Integration of timber frames with standard wood framing and engineered components required clearly defined load paths and compatibility between systems.
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Load Concentration at Timber Elements:
Localized loads from timber posts and beams required proper transfer through beams, floor systems, and into the foundation.
Geometric Complexity:
Multiple roof slopes and vaulted ceiling conditions required precise coordination between the structural system and architectural layout.
2. The Engineering Solution
A coordinated structural system was developed with a focus on performance, constructability, and code compliance.
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a) Structural Framing System:
A combination of engineered wood members (LVL beams, TJI joists) and timber framing elements was designed to ensure continuity and efficiency of load paths.
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b) Load Transfer Strategy:
Point loads from timber frames were transferred through beams and columns into reinforced concrete foundations with clearly defined bearing conditions.
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c) Roof and Geometry Coordination:
Roof framing systems were coordinated with timber elements to accommodate vaulted ceilings while maintaining structural integrity and efficiency.
3. The Outcome
The project resulted in a complete, permit-ready structural drawing package. The design provided a coordinated structural system for a hybrid timber and conventional wood-framed residence, ensuring clear load paths, constructability, and compliance with applicable codes.