Foundations for Koi pond
- Thread starter CoStan
- Start date
Sponsored Links
The proposed foundations seem to me to be well over the top,
(unless there is something special about koi ponds I don't know).
I would normally expect a pond ,in clay soil particulaly, to be just a 'buyril' (?) liner fastened down at the edges by rocks and filled with water.
What is the thing with the huge thick base? (9") and rebo? that would be normal for a light engineering factory, but fishes???
Quite apart from the fact that life is too short.
(unless there is something special about koi ponds I don't know).
I would normally expect a pond ,in clay soil particulaly, to be just a 'buyril' (?) liner fastened down at the edges by rocks and filled with water.
What is the thing with the huge thick base? (9") and rebo? that would be normal for a light engineering factory, but fishes???
Quite apart from the fact that life is too short.
It is well over the top, but if you are worried about movement on a clay site then only thinking of the base - especially as it's not going to be lined - is a waste of time, as any movement between wall and base is going to result in a leak or leaks.
Gotcha, shytalks,
I agree, the possible earth heave cannot be stopped by making the base thicker/heavier/reinforced, there would have to be clay board installed under somehow??
It jusy won't work.
So just dig it out, line it with a flexible propriety liner and fill, (not from the tap mind, so get saving that rainwater now.
I agree, the possible earth heave cannot be stopped by making the base thicker/heavier/reinforced, there would have to be clay board installed under somehow??
It jusy won't work.
So just dig it out, line it with a flexible propriety liner and fill, (not from the tap mind, so get saving that rainwater now.
Sponsored Links
Clayboard will do sfa under a raft. It's a void former, which biodegrades, so the raft would end up being held up by....air. Which won't work too well.
Blockwork on a slab, no liner is asking for leaks, regardless of subsoil.
Blockwork on a slab, no liner is asking for leaks, regardless of subsoil.
Hi, shytalks,
Exactly, that's why I put a '?' about it.
Unless I'm missing something fundamental about ponds, whic are really just holes in the ground, then all this talk of concrete etc is ball-cocks
(to use a technical trade term)
Exactly, that's why I put a '?' about it.
Unless I'm missing something fundamental about ponds, whic are really just holes in the ground, then all this talk of concrete etc is ball-cocks
(to use a technical trade term)
The standard construction for proper koi ponds is conc slab with blockwork sides, liners are for goldfish ponds.
I have clay soil and used a 9" reinforced slab for the base, bars turned up the sides then hollow 9" conc blocks infilled with conctete. (Flat laid 100mm blocks are better if you have curves. )Then cast a ring beam around the top to rest the rockwork on. It's been in for 10yrs now with no leaks.
You will have to waterproof the blockwork in some way, I went for a rendered and fibreglassed finish.
Few pics of mine under construction here
Quite a good series of build photos here of someones pond
Jason
I have clay soil and used a 9" reinforced slab for the base, bars turned up the sides then hollow 9" conc blocks infilled with conctete. (Flat laid 100mm blocks are better if you have curves. )Then cast a ring beam around the top to rest the rockwork on. It's been in for 10yrs now with no leaks.
You will have to waterproof the blockwork in some way, I went for a rendered and fibreglassed finish.
Few pics of mine under construction here
Quite a good series of build photos here of someones pond
Jason
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
