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UBC 97 vs NBCC 95[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "SEAINT" <seaint(--nospam--at)seaint.org>
- Subject: UBC 97 vs NBCC 95
- From: "Avicpeng" <vicpeng(--nospam--at)telus.net>
- Date: Fri, 26 Aug 2005 09:28:19 -0700
Question for those doing both systems.
I'm reviewing a tent design for use in BC, Canada, and I am comparing "specified" wind loads developed from NBCC guidelines with UBC 97 Section 1613 +/-.
I'm finding that NBCC loads are higher than UBC 97 loads (?).
Also, when I use the NBCC to calculate pressures from wind velocity, I get higher psf than shown on Table 16-F. That's not so much of a problem as the CpCg factors that I use to get the wind pressures for the design. I get significantly higher loads using NBCC (in the order of 30 to 70% depending on use of end zones etc). NBCC doesn't have exposure zones ....
Can anyone tell me if I'm using the wrong factors to make a direct comparison? It seems that the "specified" loads should be similar (?).
Thor Tandy P.Eng MIStructE
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