Yes, and they were not suppose to soft convert like that. Our highways
speeds were not, and many other things werenot. Oh, well, bureaucrats do
what they like.
Chris opr VE7HCB
At 03:18 PM 2002-08-15 -0400, Jimmy Weierich wrote:
>On Thu, 15 Aug 2002 Hank Lonberg wrote:
>>The BC code and National Building Code of Canada do not
>>use wind velocity. They use a design velocity pressure
>>in kPa based on recurrence frequencies of 1 in 10yrs, 1
>>in 30yrs, and 1 in 100yrs. The value you seek is the 1
>>in 30yr value.
> From Appendix C 1998 BCBC, the values for Vancouver,
>>including Richmond, Surrey and W. Vancouver are as
>>1 in 10 : 0.36 kPa = 7.72 psf
>>1 in 30 : 0.44 kPa = 9.19 psf
>>You could convert these to mph via p=0.00256*V^2.
>>Like all codes the design pressure is modified by
>>several factors to account for terrain, gusting and
>>height above the ground.
>Amazing how the conversion yields almost exactly 55 and 60 mph!
>Jimmy Weierich, K2LV, ex KG2AU <firstname.lastname@example.org>
>Vestal, NY USA FN12xa
>Self Supporting Towers, Wireless Weather Stations, see web site:
>Call 888-333-9041 to place your order, mention you saw this ad and take an
>additional 5 percent off
>any weather station price.
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