Page 1 of 1
Posted: Fri Sep 24, 2010 12:00 pm
by dbroms
a few questions about a new project im about to start.
I am going to rip up my existing patio and concrete and lay a hopefully well drained patio. I have problems with clay soil and need drainage , here lies my first few questions.
1; my patio will drain the water away from the house into hopefully a linear drain but how am i going to connect my linear drain to an existing surface water drain which is located next to the house .
2; will a linear drain be the way to go or is there a better way . if i can post a pic you will see my problem.
i have ordered the book from this site so should help.
any suggestion or tips much appreciated .
can you post a pic on here ?
Code: Select all
[img]http://i768.photobucket.com/albums/xx323/dbroms/patio/patiodrainage.jpg[/img][/color]
Posted: Fri Sep 24, 2010 1:57 pm
by GB_Groundworks
it will depend on how low the surface water drain is by the house, you will connect the linear drain with 110mm plastic underground drainage pipe and fittings, but you will need a fall from the outfall of the linear drain to your connection with the existing drain.
alternatively lay the drain alongside the house and fall the patio that way and connect straight into surface water drain
Posted: Fri Sep 24, 2010 2:02 pm
by jonnyboyentire
in this instance Giles' 2nd solution may work better as it looks like your lawn is higher than the patio falling towards it. Reverse the fall and you could possibly level the edge of the patio with the lawn.
Most of us will normally try to fall away from the house, this one maybe best (easiest) the other way.
Posted: Fri Sep 24, 2010 4:44 pm
by Pablo
I concur install the channel along the house and around any steps if you're planning on them.
Posted: Fri Sep 24, 2010 10:52 pm
by dbroms
many thanks for all the replies, i agree if the linear drain is against the house it will make things much easier but i have a few concerns.
the water seems to flood on the edge of the lawn and patio and im worried that it will continue to do so unless i manage to put a drain beween the the patio and lawn. if i put a linear drain close to the house , is there another drain or type of drain that i could possible use to help drain any build up ?
how close to the house wall is it recommended to put the linear drain ?
there is foul water drain as you can see in the picture , how to i get past that , do i move it or lay my linear drain around it ?
many thanks
daz
Posted: Sat Sep 25, 2010 8:24 am
by seanandruby
read here Could be you had a soakaway and it's reached the end of it's life. Maybe install a new one?
Posted: Sat Sep 25, 2010 8:49 am
by dbroms
seanandruby wrote:read here Could be you had a soakaway and it's reached the end of it's life. Maybe install a new one?
it has got one that i attempted to do many years ago but i never went deep enough. im not sure a soakaway will work due to my heavy clay soil. Ideally i would like a linear drain there and pipe it to the surface water drain near the house. Could i connect into the surface drain low down to accomodate the fall from the linear drain ?
Posted: Sat Sep 25, 2010 9:55 am
by seanandruby
How deep did you go? Did'nt you get through the clay. If connecting to the surface water drain is your only option, i would dig down and see where it goes to for quickest route to connection.
Posted: Sat Sep 25, 2010 1:50 pm
by dbroms
seanandruby wrote:How deep did you go? Did'nt you get through the clay. If connecting to the surface water drain is your only option, i would dig down and see where it goes to for quickest route to connection.
i only went down about 18" as it was supposed to be a quick fix for my flooding patio.
I suspect the surface drain will go from the back of the house around the side to the main drains in the street so nowhere close to where i want to go. Im sure i could work out from the surface drain to where the linear drain will finish how far i will have to pipe and work out the fall which hopefully will tell me how low down the surface drain i need to connect to.
Im a little worried sloping towards my house into my proposed linear drain aswell as the problem of somehow getting past 2 foul drain before i can connect to the surface drain.
Posted: Sun Sep 26, 2010 12:35 pm
by dbroms
well done loads of reading last few days and i think im going to slope away from the house into linear drains. the patio will only slope approx 9cm ( 3.6m working at 1:40) away from the house and using 1:100 for the pipe to return from the linear drain so should be ok to connect to my existing surface drain with some sort of connector which will allow connection of i guess around 12 cm below surface.