[TowerTalk] Crossing the ditch - PVC?

[WA9ALS - John]

I've read the archives and other posts about PVC versus direct burial of 
cables.  Would like some advice given my specific situation.

Feedline is LMR-600DB (has the flooding compound).  Rotator and switchbox 
control is romex UF-B.  I have a 550 ft run, about 1/3 above ground and 2/3 
in 12 inch trench.  (I already know deeper is better, more or less.)

There are 2 "special" points along this run:

1.  One is about 30 feet through a particularly rocky area.  I wanted to 
use some extra protection thru here.  I've considered 3-4 sections of PVC, 
cemented together;  sections of PVC NOT cemented together and ends left 
apart;  using something like septic pipe with holes for drainage.  The 
latter sounds the best to me - comments?

2.  At another point I have to cross a ditch that feeds a farm pond.  The 
ditch is dry now, but can be quite briskly flowing in the spring.  3 
sections of PVC will take the cables straight across.  I could even make a 
slight prop in the middle so that any water would tend to drain downwards 
toward the open ends.  Or, I could use the septic pipe with holes and just 
know that it would be wet when it's wet out and dry when it's dry out! 
 Comments?

Please save your comments about starting over, going 36 in deep and burying 
4 inch PVC - not gonna happen.  ;-)  Many thanks for practical suggestions 
for this run.  73

WA9ALS - John  mailto:jfleming@shelbynet.net
http://www.shelbynet.net/~jfleming/towerproject.htm
http://www.shelbynet.net/~jfleming/amstart.htm



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