"Ecnerwal" wrote in message
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In article ,
"Bob La Londe" wrote:

"Ecnerwal" wrote in
message
...
In article
,
Jim Wilkins wrote:

Try grey plastic electrical conduit instead.


Machining-wise, essentially the same. The only real advantage of the
electrical stuff is sunlight resistance - I use 1/2" for driveway

for anybody thinking to sue the stuff in a sunlight application for its
intended purpose, that is very misleading. It will sun rot and break
like
white water pipe, just not as fast. The schedule 40 is absolutely not
rated
for sunlight, and while the schedule 80 is, I can say it will also sun
rot,
and the only reason it doesn't break up in most applications is the extra
wall thickness. Not taking away from your application, just wanted to
throw
that in there before somebody electrocuted themselves down the road.

Both Carlon (major conduit manufacturer in the USA) and the NFPA (the
folks that write the NEC) disagree with you. Sunlight resistant is
printed right on there, on schedule 40. It's rated for the prupose, its
designed to be used for the purpose.

And yet I can show you hundreds of locations where the stuff is turning
color and getting brittle within a few miles of my house. Both sch40 and
80.



As to
your driveway markers... Why not put in some pressure treated 4x4s with
some reflectors screwed to them?

Massive overkill, massive waste of money, and foolish to put something
that will cause damage if you slide into it alongside the driveway. 25
cents worth of PVC and a couple more cents worth of Scotchlite tape do
the job just fine, and don't damage anything if they are hit with a car.

--
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