Foul drain direction - How to determine foul drain direction

[Roysnail]

Hi..

Ive nearly whacked a metapost through one of the pipes from an inspection hatch in my girlfreinds garden.

She now wants to get the plans for the drains in her garden from "Geodesys" Does this cost?
I have to whack another 1 in yet in a different place..and yep sods law..its very close to the direction of another.

Do they just go straight from hatch to hatch and how deep should they be? and how far apart would be the next illusive hatch?
They weren't more than 6" deep inside the inspection hatch..

Thanks for any help..

[seanandruby]

if you look inside ICs you will see the centre of the pipes . pull a line from one to the other, at centre, that may be your line. change of direction, change of fall, or, just the length can determine where manholes etc; will be. those spikey things are a waste of time and money. if you are that close to a pipe run then you are more than likely in the trench, not good for a fence it will be at 45% after the winds. if you can move it i would advise you to. good luck

[Tony McC]

Metposts? Are you mad, man? Only the feeble-minded and criminally insane use metposts!!