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- To: addseaoc(--nospam--at)euken.com
- Subject: Fwd: Re: Plywood Shear Walls with Windows
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 30 Jul 1997 14:50:28 GMT
Bill: I am putting the finishing touches on an APA Research Report (#157) which documents monotonic tests on four 8ft x 12ft shear walls with openings including a full height door and windows of various sizes. The report should be available from APA before mid-year. The results for effective shear stiffness and shear strength compare favorably with an empirical analysis developed by Dr. Hideo Sugiyama of the Science University of Tokyo; the method is in use that country. Also, AF&PA have used the method in their new Wood Frame Construction Manual (WFCM) which is in process; a version for the Standard Building Code has been adopted by SBCCI already. Dan Dolan, PhD of Virginia Polytechnic Institute and State University has monotonically and cyclically tested 8ft x 40ft shear walls with a variety of window and door openings to test Sugiyama's analysis, and results are reported to confirm the empirical method (the VPI&SU report is not yet available). All of the above testing was ! conducted with hold-downs just at the ends or near the ends of the wall. The resulting wall is not as stiff or strong as a wall with hold-downs alongside each opening, but the resulting wall does have some structural value. If you want to go for the max, put hold-downs alongiside each opening, which makes each wall segment act as a full-height shear wall (subject to the aspect ratio limitations, of course). However, the Sugiyama method should find practical use for residential construction. If you can't wait for the APA report, contact AF&PA (Washington, DC) to see if they will send you an description of the design method based on Sugiyama's approach, with modifications developed by Sugiyama and Brad Douglas, PE of AF&PA. --- Internet Message Header Follows --- Received: from server1.seaoc.org (bqe.com [184.108.40.206]) by host1.texramp.net (8.8.5/8.8.5) with SMTP id WAA12294 for <rlewis(--nospam--at)techteam.org>; Sun, 9 Mar 1997 22:54:12 -0600 (CST) Received: from mail1.halcyon.com by server1.seaoc.org (NTList 3.02.10) id ga008768; Sun, 9 Mar 1997 20:49:51 -0800 Received: from blv-pm103-ip5.halcyon.com by mail1.halcyon.com (5.65v3.2/220.127.116.11/10Nov96-0444PM) id AA17240; Sun, 9 Mar 1997 20:47:50 -0800 Message-Id: <MAPI.Id.0016.00726f73653336203030303730303037(--nospam--at)MAPI.to.RFC822> In-Reply-To: <3322FE62.286(--nospam--at)concentric.net> References: Conversation <3322FE62.286(--nospam--at)concentric.net> with last message <3322FE62.286(--nospam--at)concentric.net> Priority: Normal To: seaoc(--nospam--at)seaoc.org Mime-Version: 1.0 From: John Rose <jrose36(--nospam--at)halcyon.com> Subject: Re: Plywood Shear Walls with Windows Date: Sun, 09 Mar 97 20:46:50 PST Content-Type: text/plain; charset=US-ASCII; X-MAPIextension=".TXT" Content-Transfer-Encoding: 7bit Reply-To: seaoc(--nospam--at)seaoc.org Error-To: seaoc-ad(--nospam--at)seaoc.org X-Loop: seaoc(--nospam--at)seaoc.org X-Info: [SEAOC] Owner: seaoc-ad(--nospam--at)seaoc.org X-POP3-Rcpt: seaoc-ad(--nospam--at)seaoc.org X-Sender: seaoc-ad(--nospam--at)seaoc.org Precedence: list X-ListMember: rlewis(--nospam--at)techteam.org [seaoc(--nospam--at)seaoc.org] __________________________________________________ Richard Lewis, P.E. Missionary TECH Team rlewis(--nospam--at)techteam.org The service mission like-minded Christian organizations may turn to for technical assistance and know-how.
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