Re: Coil Form needed 2

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: Mddeming-at-aol-dot-com
 >
 > In a message dated 5/17/04 10:16:52 PM Eastern Daylight Time,
 > tesla-at-pupman-dot-com writes:
 > Original poster: "makinglightning comcast" <makinglightning-at-comcast-dot-net>
 >
 > What makes the green sewer pipe different? I see this in the larger sizes
 > and it seems different than the white pvc, harder and heavier.
 >
 > Hi,
 > The larger the diameter of a pipe, the easier it is to crush, especially if
 > the pipe is not under internal pressure. Usually a sewer pipe is at 0 psig.
 > and the larger sizes are often used under driveways, roads, etc. They must
 > therefore be much more rigid to stand up to this environment.
 >
 > Hope this helps,
 > Matt D..

	I've also observed that it isn't necessarily as round as regular pipe;
must be pretty cheap stuff.

Ed