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Posted: Tue Jun 30, 2009 12:02 am
by irishpaving
i'm about block pave an existing driveway which has been covered with 20mm stone. The drive has a fall of 300mm over 4.7m towards the house. With such a fall towards the house should a channel drain be used
Posted: Tue Jun 30, 2009 12:40 am
by lutonlagerlout
yes
Posted: Tue Jun 30, 2009 4:10 pm
by irishpaving
ty.... is it ok to connect into an existing rwp
Posted: Tue Jun 30, 2009 5:10 pm
by oioisonnyboy
depends how big the driveway is, how big an area will the linear channel be draining?
It might be worthwhile to get a back inlet gully at the base of the rwp, the downpipe feeds into the top of the gully and the sump from the linear drain goes into the back inlet.
Posted: Tue Jun 30, 2009 5:24 pm
by irishpaving
total area is approx 50m sq
Posted: Tue Jun 30, 2009 6:46 pm
by dig dug dan
you need to be careful that you don't overload an exisiting soakaway by draining more water into it than its designed for.
Personally i would dig a new one to be sure
Posted: Tue Jun 30, 2009 9:06 pm
by Dave_L
What roof area currently drains into this rwg?
Posted: Tue Jun 30, 2009 10:35 pm
by lutonlagerlout
i went back to a soakaway i dug 2 years ago today and the darn thing was a pond
pumped it out ,re-dug it and installed multirtrack and crates but it will just be an underground pond now
bleedin BCO s and clay
LLL
Posted: Wed Jul 01, 2009 2:07 pm
by irishpaving
the house is built on a hill and is a semi. This drive and the drive next door has a concrete retaining wall seperating them and is about 700mm at the highest point.
Its a concrete drive which has to be broken out in order to keep the correct level but it looks like the retaining wall and the concrete drive were poured in one hit.
Roof area is approx 25m sq