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Re: Wood: 'en' and Plywood question.[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Wood: 'en' and Plywood question.
- From: Seaintonln(--nospam--at)aol.com
- Date: Fri, 16 Jul 1999 03:41:01 EDT
Well John, it's about time you jumped in to this discussion. I thought maybe APA was starting to barracade the premises worrying about the frustrated structural engineers out there that are ready to attack:>) You brought up a good point. In the shearwall deflection calculation, if the en reduces (shear per nail) because of sheathing on the other side, the t value (effective thickness in the plywood) needs to also double - thus making the wall stiffer as you noted. I had nearly forgotten that one. Good to hear from you. BTW, if we all got to work late into the night for this one, we expect you to as well:>) (that is unless your too old for late night grind:>) Regards, Dennis In a message dated 7/15/99 11:08:58 PM Pacific Daylight Time, jrose36(--nospam--at)earthlink.net writes: << Dennis, I agree with your interpretation below. What isn't stated is that with sheathing on both sides of the wall, nailed with the same schedule, the shear capacity doubles. The extra capacity is not utilized since the shear demand (load) is the same in your example. Thus, the wall will be stiffer when sheathed both sides instead of one side, for a given shear demand. This also was pointed out in one of the other responses. You guys are going to force me to bring my APA lit. and UBC home, so I can answer these interesting questions! John Rose/APA >>
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