[TowerTalk] Adivce Using Irrigation Pipe

[Richard (Rick) Karlquist]

Richard (Rick) Karlquist wrote:

> 
> It works better to use a sleeve that fits on the outside.  If you insist
> on an inside piece, note that "2 1/2 inch" PVC pipe has an OD of 2 7/8 
> inch.  3 inch irrigation tubing, with the standard 0.050 inch wall, has
> an ID of 2 7/8 inch.  You can sand the PVC pipe slightly until it just
> fits the irrigation tubing.

I should have said the irrigation tubing has a 2.900 inch ID and the
PVC pipe has a 2.875 inch ID.  Ideally, it slips inside with 12.5
mils of clearance.  In practice, sanding may be necessary.  YMMV.
This is why an outside sleeve is easier; you don't have to worry
about any of this.

Rick N6RK