richard,
To clarify another post, you need to use "Schedule 40" pvc which is U.V.
resistant.

I'd think each segment of your loop won't be much more than 2 meters long.
I'd kind of doubt you'll need reinforcemment  for that relatively small
setup, but you could also use a few extra rope supports depending on how
you're going to support the loop.

There shouldn't be any; issue with running the wire inside the pipe, except
kind of a tangle while assembling everything on the long wire.

How do you plan to support the loop?

Tom Fowle WA6IVG
On Sat, Nov 07, 2015 at 05:14:52PM +0000, R Bernstein wrote:
> Use uv-resistant PVC.  Reinforce it inside with wooden dowels or possibly 3=
> /4 inch PVC.
> 
> 73, Rick W3GWU
> ________________________________________
> From: For blind ham radio operators [[log in to unmask]] on beha=
> lf of Richard B. McDonald [[log in to unmask]]
> Sent: Saturday, November 7, 2015 9:11 AM
> To: [log in to unmask]
> Subject: Using PVC as a Frame for My 10M Full Wave Loop Antenna
> 
> Hi!
> 
> 
> 
> So, I am planning to make my RX only 10M (28.4 MHZ) full wave loop antenna
> into an octagon shape.  My wire is insulated 14 gauge stranded copper wire.
> I intend to use ~1.0" diameter PVC pipe for a frame.  About PVC pipe, does
> it matter if I 1) put the wire inside the pipe or 2) tape it to the outside
> of the pipe?  I prefer putting the wire inside the pipe.  However, are ther=
> e
> any RF interference issues with PVC?  Also, I wonder how PVC will hold-up t=
> o
> the elements - particularly UV light (sunlight)?
> 
> 
> 
> 73,
> 
> Richard KK6MRH