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1 Dec 2007 at 1:22 pm
#301760
digger
Participant
Siekster
The falls for drainage lines in NSW Australia are
65mm pipe = 1 foot fall in 40 feet
80mm pipe = 1 foot fall in 60 feet
100mm pipe = 1 foot fall in 60 feet
125mm pine = 1 foot fall in 80 feet
Regards
Digger