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Fwd: Re: Fire Damages Structures[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: wai(--nospam--at)euken.com
- Subject: Fwd: Re: Fire Damages Structures
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 06 Aug 1997 14:56:44 GMT
In a message dated 97-04-08 19:56:01 EDT, you write: << Subj: Fire Damages Structures Date: 97-04-08 19:56:01 EDT From: ballense(--nospam--at)concentric.net (Bill Allen, S.E.) Reply-to: seaoc(--nospam--at)seaoc.org To: seaoc(--nospam--at)seaoc.org (SEAOC List Serve) I've been asked to look at a tilt wall building with recent fire damage. I haven't seen the structure yet, but I understand the purlins and GLBs are charred. There is also some spalling in the tilt wall panels. Is anyone familar with guidelines that will help determine what has to be replaced and what can remain. My common sense is telling me that the purlins are probably bad, the GLBs might be OK and I have some concern about the spalled concrete since this is probably due to the expansion of the reinforcing steel. Thanks, Bill Allen >> Bill, I would go along with your initial assumptions. The purlins are bad if they have been charred by the fire, and I would say the same for the glu-lam beams. I know the glu-lam might be considered heavy timber, but because of the reduced effective member properties (Ix, Sx, A) due to charring do you want to take the liability for the saying the beam is still OK even if it calc's out. What is the integrity of the glue between the laminations after being exposed to the heat of the fire. I have done one fire repair which involved gang-nail trusses on a commercial building. All the roof trusses collapased on one side of the building due to the fire. If the trusses showed signs of fire damage, they were replaced. If it was just smoke stains on the trusses they were allowed to remain. I imagine the spalled concrete is near the wall base, because of more combustible material and furniture then at the roof line. On our job we had to replace the wood ledgers to the existing CMU walls. We tested all the remaining ledger anchor bolts in tension per CMU cast-in-place anchor bolt values listed in the UBC. We found we had to replace some anchor bolts because of ungrouted cells in one wall. We also took some wall cores to determine the wall strength which tested out OK. We had no real spalling damage that had to be repaired. I would be curious to know about any written guidelines also. Hope this helps. Michael Cochran Brian L. Cochran Associates --- Internet Message Header Follows --- Received: from server1.seaoc.org (bqe.com [18.104.22.168]) by host1.texramp.net (8.8.5/8.8.5) with SMTP id AAA13172 for <rlewis(--nospam--at)techteam.org>; Wed, 9 Apr 1997 00:29:03 -0500 (CDT) Received: from emout05.mx.aol.com by server1.seaoc.org (NTList 3.02.10) id ja017013; Tue, 8 Apr 1997 22:01:06 -0700 Received: (from root@localhost) by emout05.mail.aol.com (8.7.6/8.7.3/AOL-2.0.0) id AAA13692 for seaoc(--nospam--at)seaoc.org; Wed, 9 Apr 1997 00:58:16 -0400 (EDT) Date: Wed, 9 Apr 1997 00:58:16 -0400 (EDT) From: BCASE1356(--nospam--at)aol.com Message-ID: <970409005813_50496987(--nospam--at)emout05.mail.aol.com> To: seaoc(--nospam--at)seaoc.org Subject: Re: Fire Damages Structures 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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