[TowerTalk] Underground PVC Tubing?

[Gene Smar]

Rich:

     If the choice is between 3 and 4 inch conduit, go with the 4 inch.
Also, as others here have said, use sweeps not elbows for your angle turns.
The sweeps are large radius curves that don't force the coax cables into
tight turns at corners.  I used commercial-grade conduit (
http://www.carlon.com/Home.html ) from my local electrical supplier.

     I'd also recommend you drill a few half-inch holes underneath the
conduit at the low points.  Your conduit runs will not be hermetically
sealed and WILL accumulate moisture/water that must be drained.  I'd further
suggest you dig a small pit underneath the conduit at these holes and fill
said pits with gravel or rocks to act as French drains for this water.
Lastly, cover these conduit holes with landscaping material - the kind that
is used in flower beds to keep down weeds - so varmints can't get in.  I
just wrapped the entire circumference of my conduit run at these holes and
tied the material in place with #14 insulated wire.

     Don't forget to include a pull rope that stays with the cables for use
in pulling the next (inevitable) coax run through the conduits.

73 de
Gene Smar AD3F

----- Original Message ----- 
From: "Rich Hallman - N7TR" <rich at n7tr.com>
To: <towertalk at contesting.com>
Sent: Wednesday, April 14, 2004 11:35 PM
Subject: [TowerTalk] Underground PVC Tubing?


What type of PVC Conduit Tubing is being used to protect control cables
and coax that is being buried?  Looking at two 3 to 4 inch conduit....

I'm finishing a 2ft deep trench to my towers and looking for what is
being used and what can be purchased at home depot or Lowes.

10 ft or 20 ft lengths?

Thanks...
Rich

N7TR Web Site
www.n7tr.com <http://www.n7tr.com>

N7TR DX-Cluster
 <telnet://dxc.n7tr.com>


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