Situation
A temporary strut and waler support system for an excavation project in Ontario was originally detailed with field-welded connections and complete joint penetration (CJP) welds. During review, concerns were raised regarding constructability, fabrication complexity, inspection requirements, and overall installation efficiency.
The client sought alternative connection solutions that would remain structurally sound while reducing field labor, fabrication difficulty, and schedule risk.
Engineering Scope
Review of the original connection details, evaluation of applied loads and load paths, and development of alternative steel connection designs suitable for practical fabrication and installation. Finite element analysis was used selectively to verify load transfer, stress distribution, and structural adequacy of the revised connection details.
The scope included proposing bolted connection alternatives to replace field welding, as well as redesigning specific welded details to improve constructability while maintaining compliance with applicable steel design standards.
Key Engineering Considerations
Load transfer mechanisms within strut and waler assemblies
Feasibility of field welding versus bolted installation
Fabrication tolerances and accessibility
Inspection requirements associated with CJP welds
Applicability of fillet welds for double waler configurations
Structural performance and code compliance of revised details
Outcome
Practical bolted steel connections were developed as alternatives to the originally specified field-welded details, significantly simplifying on-site installation and reducing labor requirements.
For a double waler configuration, the original CJP weld detail was redesigned using fillet welds, resolving fabrication challenges while maintaining structural adequacy. The revised connection details improved constructability, reduced fabrication time, and provided a cost-effective, code-compliant solution aligned with the project’s construction constraints.
Temporary works and shoring systems with complex steel connections benefit from review by an experienced structural engineer in Toronto to balance structural performance, constructability, and installation efficiency.
Related Engineering Services
Steel connection design
Temporary works and shoring engineering
Discuss a Similar Engineering Challenge
If you’re planning a project with similar structural constraints or technical challenges, we can provide practical engineering guidance and documentation. Contact a structural engineer.