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Re: More Canada ???

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We don’t use the AISC conversions to SI. We tend to be more liberal in our 
 Imperial-SI conversions. The design standards are calibrated to the metric
calculations but are frequently dimensionally non-specific (e.g. use
consistent dimensions and you get appropriate results).

So, W6x15 = W150x22

Fy = 50 ksi = 350 MPa (vs 345 MPa per AISC)

We still do projects in either system. Bolts are usually spec’d as imperial 
 size but occasionally I see M20 instead of ¾” on an SI project.

CISC provides a cross-reference table of sections in the Handbook of Steel

They also have a spreadsheet that is available with all section properties
in metric.


Paul Ransom, P.Eng.

> Date: Tue, 15 Apr 2014 10:41:09 -0500
> From: Bill Polhemus <bill(--nospam--at)>
> Subject: More Canada ???
> Does Canada typically use the SI-equivalent sizes shown in the AISC shape
> database?
> E.g. Imperial W6X15 = SI W150X22.5
> William L. Polhemus, Jr. P.E.

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