A Pull Contest

Several years ago, I visited a site where a retaining wall had fallen over because the rebar was not anchored properly and it pulled loose as the wall was backfilled. When I pointed this out at the site to the incredulous contractor, he jumped up on a stump of the wall, grabbed the end of a protruding rebar and pulled as hard as he could. "See", he said, "this bar is solid."
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He obviously had no idea that he would have to pull with a force equal to lifting up the back end of a loaded dump truck in order to show that the bar was properly anchored.
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July 2005 Wright Stuff
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A pull test is used to verify that a rebar is properly anchored.