Structural Design Review for Elevated Cedar Deck – Sandfield
Parsways Inc. provided structural engineering services for an attached elevated rough-sawn cedar deck in Sandfield, Ontario. The scope included structural review, design optimization based on available materials, and preparation of stamped structural drawings for permit submission.
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The design was completed in accordance with the Ontario Building Code (OBC 2024), with a focus on clear load paths, connection detailing, and constructability.
Location: Sandfield, Ontario
Completion: January 2026
Sector: Residential
1. The Challenge
The project was governed by the use of rough-sawn cedar for all primary structural members.
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Material Limitations:
Use of cedar 2x8 members required strict control of spans and spacing due to reduced structural capacity compared to standard framing materials.
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Support Conditions:
Round cedar log posts supported on helical piles required careful consideration of bearing conditions and connection detailing to ensure reliable load transfer.
2. The Engineering Solution
A refined structural system was developed to work within material constraints while maintaining code compliance and structural performance.
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a) Framing Optimization:
Joist spacing was reduced to 12" o.c. to improve performance within allowable limits.
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b) Load Transfer System:
4-ply built-up 2x8 beams were designed to transfer loads efficiently to timber posts and helical pile supports.
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c) Stability and Connection Detailing:
Knee braces and defined connection details were incorporated to ensure stability and continuity of load paths.
3. The Outcome
A permit-ready structural package was delivered, providing a practical and code-compliant solution aligned with project constraints and available materials.