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To: Thermalseeker

along with pre-stressed and post-stressed tensioning steel in concrete beams, but hey I’m just a dumb contractor


35 posted on 03/13/2011 6:53:00 AM PDT by representativerepublic (...loose lips, sink ships)
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To: representativerepublic
My specialty is electrical engineering, but over the years I've supervised construction on hundreds of caissons for tower foundations. I've seen one hell of a lot of concrete get poured and it was always over rebar or other structural steel, not to mention the 2" diameter tower bolts. Sometimes they add fiberglass, too. I'm sure you've seen all that.

I noticed about 6-7 years ago while traveling through Memphis if you look at the bridges over I-40 east of Memphis you can see cable restraints they've installed between the bridge abutments and the bridge beams. My guess is the bridges are held together mostly by gravity and the cables were installed later to prevent the bridges from shaking apart in the event of a big earthquake. Those cables are on every bridge over I-40 for about 60-70 miles east of Memphis. I've seen a few on the Arkansas side, too.

38 posted on 03/13/2011 7:20:11 AM PDT by Thermalseeker (The theft being perpetrated by Congress and the Fed makes Bernie Maddoff look like a pickpocket.)
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