wrote in message
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Robert Gammon wrote:

Flat spiral == 7 feet diameter, 2 feet high...

... 4" high, fool.


Well, if by 'spiral' you mean some sort of serpentine.

Since the pipe is nominally 4", to get a spiral (even a 'flat spiral'), you
need at least 8" where one turn crosses over the other ;-)

7' diameter coils for 100' total length means about 18 turns. Coiled in a
vertical stack and then 'shoved' off to the side to spread the coils out
nearly flat would take a floor space 7' wide and about 72' long (18 turns
spaced about 4' apart). That's a tad much floor space for most folks ;-)

daestrom