Re: Coil Form needed 2

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

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..