Standards
Practical applications
Punching Shear in Spread Footings to CSA A23.3
Size a spread footing for punching shear to CSA A23.3-24: the size effect factor, the 2d footing exemption, the depth quadratic and a one-way check.
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Standards
The “Why” Behind NBCC’s Snow Load Factors
The history and engineering logic behind the NBCC snow load factors Cb, Cw and Cs, and what each one is really accounting for on your roof.
A Structural Engineer’s Guide to the Journey of Snow
How Ss and Sr differ, why the specific weight of snow changes through the winter, and how Canada's snow climates shape NBCC roof loads.
A Practical Guide to NBCC 2020 Snow Loads on Modern Roofs
How NBCC 2020 handles sliding snow, solar panel arrays, and the loads on snow retention systems and sunshades on modern roofs.
5 Live Load Nuances in the NBCC Commentary
Five NBCC 2020 commentary live load provisions that are easy to miss: snow and live companion factors, two-way slab reduction limits and repair garages.
A Practical Guide to Seismic Flexible Retaining Wall Design
Mononobe-Okabe K_AE formula with a worked 4.0 m wall, the NBC 2020 clauses that call for it, the wall inertia it leaves out, and where the method breaks.
Navigating Wind & Snow Loads in Part 4 vs. Part 9
How wind and snow loads are determined under NBCC Part 4 and Part 9, where the two paths differ, and when to switch to a detailed analysis.
About Me
I’m a structural engineer at Associated Engineering in Vancouver. The work is civic infrastructure: water and wastewater structures, seismic design, and the analysis and drawings that go with them, on projects across Canada and the U.S.
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