According to the specs at Tashtowers the WT-51 weighs 355 pounds including
the base. The base alone weighs 80 pounds.
In contrast, the shipping weight of my US Tower HDX-572 with the tilt-over
accessory was 1680 pounds. We installed it with a construction machine my
general contractor called a "skid-loader", which is a multi-purpose machine.
The US Tower was right at the weight limit for this machine!
The safest way to tilt over a WT-51 is with the tilt-over accessory. That
accessory costs $600 but it's a great investment because it will make
antenna installation and maintenance a easy chore. Cheap insurance.
>From: jim Jarvis <firstname.lastname@example.org>
>Subject: Re: [TowerTalk] tower takedown
>Date: Wed, 16 Jul 2008 12:35:15 -0400
>A wt51 is probably too heavy to allow on top of a truck cab,
>Similarly, in a layover situation, that 400 lbs (if that's the
>correct weight)... will be
>amplified by a 10' lever, and you'll apply 4000 ft-lbs of
>overturning moment to the
>back of the truck. I see disaster written all over that plan.
>I snipped out parts of Floyd's comments:
>Floyd, kc5qbc, wrote:
> What you would be better off doing is taking a look for the falling
>derrick procedure which has been metioned here in the archives to
>lower the tower.
>I would generally recommend only using the truck as an anchor point
>and doing the lowering work with a come-a-long from as high up the
>tower as practical assuming it has a tilt base.
>I would caution against using a manlift as a crane because it was not
>designed for that purpose.
>Not knowing your skillset in contruction engineering, if it feels
>questionable at all, simply let a professional handle the takedown,
>the risks are
> just not worth it.
>To which I will append: There are no free towers.
>Taking down old iron is dangerous.
>Renting a proper truck for transport is cheap.
>Renting a crane, while pricey, may be the only safe way to handle
>high iron, in a confined space.
>And finally, the falling derrick is a worthwhile technique for
>layover, as Floyd suggested.
>Even 10' of 25g and a come-along would mitigate the risks, if you
>have a clear layover path.
>Jim Jarvis, President
>The Morse Group, LLC
>Achieving Results in a Changing World
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