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- Subject: Fwd: Little Guy Sizes
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 07 Aug 1997 12:41:32 GMT
Ara wrote: ....I would design the connection for Rw=1 per LA CITY requirements. I believe SMERFS got canned but not the OMRF's. If I am wrong please correct me since 70% of new projects use some kind of a OMRF. I am also in the dark as far as the % of damage observed on OMRF in the Northridge EQ. All the research is concentrated on W 36 X Zillion sections and no one is addressing the little guys doing structural design of houses and shopping centers and even office buildings up to two and three stories. Has any one seen weld or steel fractures on W10 or W12 sections? *********************************************************** I believe this was posted before, but the SEAOC web site (www.seaoc.org) has a very nice summary list of all the various column and beam sizes that have been tested to date with notes on material grade, welding electrode used, etc. The smallest beam/columns I see are a couple of W12x65 columns with W16x40 beams. The latest requirements ( August 14, 1996) I have for the COUNTY of Los Angeles reads: "Welded moment resisting frame systems (special or ordinary) are not permitted unless the connections proposed meet the following requirements and are submitted to and approved by the County" Then they list all the material, welding, and cyclic test requirements. The latest requirements (July 16, 1996) I have for the CITY of Los Angeles have separate requirements for new construction of SMRF and OMRF. For SMRF, cyclic testing is required, however, the "engineer of the record may present the interpolation of the current tests results conducted by SAC to the Department for review". For OMRF, cyclic testing is not required but the "connections shall have adequate strength to resist the design earthquake, elastically" in addition to other requirements for OMRF's with flexible diaphragms. Thomas Hunt Fluor Daniel --- Internet Message Header Follows --- Received: from server1.seaoc.org (bqe.com [22.214.171.124]) by host1.texramp.net (8.8.5/8.8.5) with SMTP id KAA24896 for <rlewis(--nospam--at)techteam.org>; Wed, 23 Apr 1997 10:31:30 -0500 (CDT) Received: from mail3.pilot.net by server1.seaoc.org (NTList 3.02.13) id ya019498; Wed, 23 Apr 1997 07:51:45 -0700 Received: from mailgw.fdnet.com (unknown-23-148.pilot.net [126.96.36.199]) by mail-lax-1.pilot.net with ESMTP id HAA02863 for <seaoc(--nospam--at)seaoc.org>; Wed, 23 Apr 1997 07:48:44 -0700 (PDT) From: Tom.Hunt(--nospam--at)fluordaniel.com Received: from WTSWITCH (unknown-25-6.fluordaniel.com [188.8.131.52]) by mailgw.fdnet.com with ESMTP id HAA26665 for <seaoc(--nospam--at)seaoc.org>; Wed, 23 Apr 1997 07:48:43 -0700 (PDT) Received: by WTSWITCH (184.108.40.206/16.2-WT4.1) id AA294646959; Wed, 23 Apr 1997 10:49:19 -0400 Received: from MCI; Wed, 23 Apr 1997 7:30:00 -0400 Date: Wed, 23 Apr 1997 7:30:00 -0400 Subject: Little Guy Sizes To: seaoc(--nospam--at)seaoc.org Message-Id: <M2505342.005.3ih76.1.970423144847Z.CC-MAIL*/O=CCMGW/PRMD=FLUORDANIEL/ADMD=MCI/C=US/@MHS> X-Mailer: Worldtalk (4.1)/MIME 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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