[TowerTalk] Base equivalent
markrob at mindspring.com
Sat Jan 11 21:53:48 EST 2014
A ham in Florida (which has a high water table) just had a big hole dug for
his tower. The company used what is called a well point. It is defined
[wel-point] Show IPA
noun Engineering, Building Trades.
a perforated tube driven into the ground to collect water from the
surrounding area so that it can be pumped away, as to prevent an excavation
from filling with ground water.
Here are some pictures of what was done...the well point is used to pump
away the water so the hole doesn't fill with water
You can see the well point set up around the hole to keep the water at bay
----- Original Message -----
From: "Mike Reublin NF4L" <nf4l at comcast.net>
To: "towertalk reflector" <towertalk at contesting.com>
Sent: Friday, 10 January, 2014 4:28 PM
Subject: [TowerTalk] Base equivalent
> The specs for my crank up call for a hole 4x4x7.5 feet. That works out to
> 4.4 yds of concrete. The smaller backhoes that I can get to the site can
> go to a depth of 6 feet. Because of the water table, I consider it an
> unacceptable risk to put a man in the hole to dig out to 7.5 feet deep.
> A hole 5x5x6 is 5.5 yds.
> Would that be a safe equivalent to hold the tower up with the same wind
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