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Anchor Rod Failure

To: <towertalk@contesting.com>
Subject: Anchor Rod Failure
From: aa7bg@3rivers.net (K7BG Matt Trott)
Date: Mon, 16 Dec 1996 16:32:48 -0700 (MST)
At 09:19 PM 12/16/96 +0000, you wrote:
>
>> Guess what?  The 5/8" rods are only good for 7300 lbs load, which
>> doesn't make much sense if the catalog says you need three 6700#
>> strength guys in each direction.
>> 
> 
>Yes, but you're tensioning at 10% of 6700# strength. That's three 
>guys at 670# each (2010# total) load. Should be plenty of safety 
>factor there.
>
>The next size certainly won't hurt, but tension on the rods may not 
>have been the cause of failure; just the catalyst.

With a 106 mph breeze blowing I dare say the tension was a tad greater than
670#.

Matt--K7BG


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