Tick Drain Alternative?? (French Drains & Flooding)

Barry505

I'm a bit unsure of the depth I'm aiming for myself.

"If you lower the trap bend any more the incoming will be below outgoing and will always remain surcharged and for this reason soon silt up and stop working"

I thought that this might be the case, Im guessing that if the inlet is to low (lower than the output?) that the water will not clear??

Is there an alternative to this system? I understand that water wont go up hill so maybe I need to lower this connecting mains pipe to a lesser angle, however, im not sure how feasible that would be!

Cheers

DirectDebacle

I would suggest leaving the existing as is. Lowering that may cause more problems because of reduced fall.

One alternative is to construct french drain and have it discharge into a soakaway. A lot more work than you were probably planning on but IMO a safer solution.

Edit.
Here is a case study of a similar problem to yours. There may well be building regs re how deep you can dig a trench within a given distance from foundations. I would check this out before going any further and seek further professional advice as you think necessary.

anotherbaldrick

I thought that this might be the case, Im guessing that if the inlet is to low (lower than the output?) that the water will not clear??

That's right, the same effectively as having a backfall on the system and that is always a bummer. All you can do is keep connecting pipework as slack as possible (but not less than 1/100 fall) and investigate the downstream run to see if their is any depth that can be gained by relaying part at a slacker gradient.

anotherbaldrick

directdebacle wrote: »

i would suggest leaving the existing as is. Lowering that may cause more problems because of reduced fall.

One alternative is to construct french drain and have it discharge into a soakaway. A lot more work than you were probably planning on but imo a safer solution.

in clay ground ?

Barry505

/r/1j9eme/5

Ending of a new uploaded photo

Ive installed a bottle trap and a builder friend reckons that my drainage issues should now be a thing of the past due to the storm drain being level with the outlet it wasnt moving any water... in his opinion

Fingers crossed

Cheers

Barry505

Ill upload pics on diynot incase you cant see that

I_have_spoken

I'd have taken the french drains into a tanked sump pit then used a float operated sump pump to discharge into the drain.