Posted: Fri Feb 21, 2014 4:24 pm
Hi there.
I would really appreciate some advise and possibly a solution. Last summer we removed some trees from our garden just to discover a stream of water running in our garden making the garden water logged. It is difficult to identify the source of the water as it appears to be coming from the boundary wall with our neighbours who recently had some building work done.
The water company has investigated it and they say it is surface/ groundwater. Our garden is at a lower level than the house.
We plan to put a land drain from the boundary wall leading to a sump pump to pump the water back into the surface drain.
Our architect has created a plan to create a concrete trough to collect the water near the source and then build a French drain connected to the pump.
I have a couple of concerns and questions:
1. The builders are unable to create a concrete trough as it keeps building up with water. The plan was to place a non-perforated plastic pipe in the trough but I am fearful that water may escape under the pipe and find another path to the garden. Is there any other design that we can use?
2. The design of the French drain- should we put some gravel under the pipe? Is it better to use a non-perforated pipe? What should we refill the drain with?
3. We also have a patio between the garden and the source of the water. The water is escaping to the edge of the patio as well. Is it advisable to build a land drain parallel to the patio wall?
4. As the garden is clay I suppose there is no benefit of creating a soak away.
5. Should we create more land rains elsewhere in the garden- all connected to the sump pump?
I will really be grateful for some advise. It is giving me sleepless nights.
Thank you
I would really appreciate some advise and possibly a solution. Last summer we removed some trees from our garden just to discover a stream of water running in our garden making the garden water logged. It is difficult to identify the source of the water as it appears to be coming from the boundary wall with our neighbours who recently had some building work done.
The water company has investigated it and they say it is surface/ groundwater. Our garden is at a lower level than the house.
We plan to put a land drain from the boundary wall leading to a sump pump to pump the water back into the surface drain.
Our architect has created a plan to create a concrete trough to collect the water near the source and then build a French drain connected to the pump.
I have a couple of concerns and questions:
1. The builders are unable to create a concrete trough as it keeps building up with water. The plan was to place a non-perforated plastic pipe in the trough but I am fearful that water may escape under the pipe and find another path to the garden. Is there any other design that we can use?
2. The design of the French drain- should we put some gravel under the pipe? Is it better to use a non-perforated pipe? What should we refill the drain with?
3. We also have a patio between the garden and the source of the water. The water is escaping to the edge of the patio as well. Is it advisable to build a land drain parallel to the patio wall?
4. As the garden is clay I suppose there is no benefit of creating a soak away.
5. Should we create more land rains elsewhere in the garden- all connected to the sump pump?
I will really be grateful for some advise. It is giving me sleepless nights.
Thank you