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- To: seaoc(--nospam--at)power.net
- Subject: [SEAOC] Re: [SEAOC] Retrofitting of old buildings
- From: CarlS95(--nospam--at)aol.com
- Date: Sat, 26 Oct 1996 02:54:11 -0400
In a message dated 96-10-24 02:18:28 EDT, you write: << I'd like to know if anyone know of any codes of practices or literature on retrofit of old buildings. Specifically what are the factors to be considered when old buildings are to undergo major structural retrofitting works. >> If you are in a seismic region, then the resources mentioned by Frank McClure are a good start. If not in a seismic region, then the resources mentioned probably would still be a good start as to how to assess older materials. Because construction varies by region and different countries, my suggestions are general, but it sounds like the first step is for you to assess and understand the as-built conditions. No. 1: Hire a testing laboratory to do selective testing. For instance, if the building is a reinforced concrete building, you could (1) take core samples of the concrete to determine their strength and soundness, (2) take samples of reinforcing steel (from carefully selected locations) and test them, (3) use a metal detector (such as a pachometer) to verify and locate reinforcement locations in general, (4) use an x-ray machine, budget allowing, to further identify rebar sizes in some locations, and (5) use a chipping hammer to break away the concrete at selected joints, etc, to check out how well the building is tied together. No. 2. Do some research. Find old textbooks, talk to some oldtimers, find out how things were built back then (20-50 years is not really that old for some of my buddies). No. 3. Check for that warm and fuzzy feeling. If your confidence level is increasing, then you're on the right track. If not, then keep working on it. That's my contribution. Hope it helps. (P.S. Hi to Chris) Carl S. ...
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