Ed:
My first suggestion to you: Use 4 inch conduit if possible. I used three
inch because that was the max width hole my DitchWitch (tm) would cut for me.
I should have at least tried to sink 4 inch PVC into the hole, but too late
now.
Second suggestion: I think you left off the word <not> in front of
<making> or in front of <a good idea> in your e-mail, below. You do NOT want
to glue the elbows to the vertical PVC.
Yes, I also installed a pull rope for future use in the conduit.
Essentially, I pulled it along with the last coax cable through the conduit.
Finally, you ought to drill a few half-inch diameter holes in the
undersides of the low spots in your PVC run. This will allow any accumulated
water (and there WILL be some) to drain into the earth below. You can also dig
a small pit underneath these PVC holes and fill the pits with gravel to act as
a drain field. You keep the critters out of these holes by wrapping them (the
holes, not the critters) in landscape cloth and securing the cloth with wire
ties around the PVC.
Gil:
You keep the critters out of the ends of the PVC by plugging the ends with
some pliable material like fiberglass insulation or that expanding foam stuff.
I've used fiberglass insulation because the critters around these parts don't
seem to have an appetite for it and it's a lot easier to remove for future
cable installation.
I'll probably think of a few more things on this subject.
73 de
Gene Smar AD3F
-------------- Original message ----------------------
From: Edward Sylvester <navydude1962@yahoo.com>
> Interesting stuff from the group! I am planning my own installation and this
> has been very helpful. I agree that making the "elbow" permanently affixed
> is a
> good idea.
>
> Question I have is, did any of you run a length or two of rope for future
> cable pulling? My PVC, from shack to tower, will be about 25' in length and
> buried under cement, so this won't be very accessible.
>
> Your suggestions are most welcomed.
>
> 73,
> Ed NI6S
>
> "Richard M. Gillingham" <rmoodyg@bellsouth.net> wrote:
> I like it.
>
> How do you keep the kritters out?
>
> 73
> Gil, W1RG
> ----- Original Message -----
> From: "JC Smith"
> To: ;
> ;
> Cc: "'Paul Ferguson'"
>
> Sent: Saturday, July 15, 2006 4:18 PM
> Subject: Re: [TowerTalk] Sealing cables at PVC exit?
>
>
> >I did basically the same thing but used 4" ABS. The DWV sweep fittings are
> > inexpensive and available at the local home center. I used a combination
> > of
> > a 90 and a 45 on each end, and as Gene says, don't glue them on the pipe.
> > It makes pulling the cable much easier. Here's a picture:
> > http://i14.photobucket.com/albums/a317/k0hps/Misc/ABSConduit.jpg
> >
> > 73 - JC, K0HPS
> >
> >
> > -----Original Message-----
> > From: towertalk-bounces@contesting.com
> > [mailto:towertalk-bounces@contesting.com]On Behalf Of ersmar@comcast.net
> > Sent: Saturday, July 15, 2006 10:20 AM
> > To: Paul@PaulFerguson.us; TOWERTALK@contesting.com
> > Cc: Paul Ferguson
> > Subject: Re: [TowerTalk] Sealing cables at PVC exit?
> >
> > Paul:
> >
> > From your description I'm not sure exactly how your PVC is configured
> > at each end. Assuming your PVC emerges from the ground vertically, you
> > ought to include a PVC U-turn (two 90-degree elbows) in the end(s) so that
> > the cables emerge DOWNWARD. You can then use attic insulation to stuff
> > the
> > end(s) of the PVC U's around the cables. And don't glue these U's to the
> > vertical PVC; let them loose so you can remove them for easier cable
> > pulling.
> >
> > This method: allows for the conduit to breathe, i.e., lets moisture
> > evaporate to a certain extent; prevents large fauna such as mice from
> > entering said conduit; and is easy to remove to add/remove cables in the
> > future.
> >
> > In my conduit system the ends of the 3 inch PVC's enter steel boxes at
> > the shack and tower ends. Therefore, I don't need to include such drip
> > loops in my PVC system. At the shack end the cables are routed from the
> > steel box into the crawl space underneath the ground-floor shack. In this
> > manner the moisture from the conduit can be evacuated from the crawl space
> > through normal ventillation.
> >
> > 73 de
> > Gene Smar AD3F
> >
> >
> > -------------- Original message ----------------------
> > From: "Paul Ferguson"
>
> >> I am using buried 4-inch PVC pipe to run coax and control cables from
> >> shack to tower base. The PVC come out of the ground, turn horizontal,
> >> and end a foot or two above the tower base. The cables will exit the
> >> PVC, take a small drip loop, and get routed onward.
> >>
> >> What is the best way to seal the end of the PVC around the cables? I
> >> thought about using a PVC end cap and drilling holes, but adding a
> >> future cable would be difficult. I am interested in hearing what
> >> creative solutions others have found.
> >>
> >> 73,
> >> Paul
> >> K5ESW
> >> _______________________________________________
> >>
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