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- To: wai(--nospam--at)euken.com
- Subject: Fwd: Re: Min. Code Design
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 07 Aug 1997 12:41:23 GMT
Per Tom Long: >There has been some discussion in our office about designing to the minimum standards that the 1994 UBC will allow. On one side we are doing the owner a service at a economic point of view to design to the minimum. And on another side there is some opinion that to design with a 20 percent (+ - ) safety factor would be prudent due to construction problems, architects revisions after the structure is under construction, and any other circumstances that possibility could and will occur. < I would not arbitrarily add 20 percent across the board to my designs. Nor would I automatically use the code minimums. I generally try to be on the conservative side in estimating loads and in determining worst case load conditions. I then design to be within code allowables. If I feel special conditions warrant design beyond code minimums, I will do so "by engineering judgement". If I feel loading information is only preliminary and may increase, I may add a contingency to the preliminary loads to minimize redesign (i.e., for design economy). Engineers should design with both economy and safety in mind. Always adding 20 percent is uneconomical and too arbitrary. Safety factors in codes are supposed to account for some inaccuracies in the field or in load assumptions (i.e. phi factors and load factors). Code minimums are just that - minimums. Thus each case must be evaluated by engineering judgement. --- 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 OAA28385 for <rlewis(--nospam--at)techteam.org>; Wed, 23 Apr 1997 14:40:01 -0500 (CDT) Received: from cdm-bh.cdm.com by server1.seaoc.org (NTList 3.02.13) id ea019530; Wed, 23 Apr 1997 12:17:26 -0700 Received: (from uucp@localhost) by cdm-bh.cdm.com (8.6.12/8.6.11) id PAA26958 for <seaoc(--nospam--at)seaoc.org>; Wed, 23 Apr 1997 15:11:44 -0400 Received: from mailer.cdm.com by cdm-bh.cdm.com via smap (3.2) id xma026942; Wed, 23 Apr 97 15:11:25 -0400 Received: by cdm.com (5.0/SMI-SVR4) id AA06356; Wed, 23 Apr 1997 15:10:22 +0500 Date: Wed, 23 Apr 1997 15:10:22 +0500 Message-Id: <9704231910.AA06356(--nospam--at)cdm.com> From: "Bill Sherman" <SHERMANWC(--nospam--at)cdm.com> To: seaoc(--nospam--at)seaoc.org Subject: Re: Min. Code Design X-Orcl-Application: In-Reply-To:UNIX.COM:tomlong(--nospam--at)silcom.com's message of 21-Apr-97 12:49 Mime-Version: 1.0 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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