Hi

Can somebody tell me where this type of overflow pipe can be bought,

We are located in Phetchabun, but so far no luck finding any.

Thanks

Don't know where that one can be sourced.  But an alternative is...

 

1.  Dig a trench about 15cm deep that will direct the overflow to <somewhere else>.

(you could stop here if you want to do it the upcountry Thai way)  ????

2.  Get enough 2" PVC to span the distance of the trench.

3.  Drill 3/8" holes in the PVC about 20cm spacing.

4.  Get enough small sized gravel to fill the trench (less the PVC).

5.  Lay 3cm or so of gravel in the bottom of the trench.

6.  Lay in the PVC holes down.

7.  Top off with gravel.  

 

No more ground water pools.

 

Thanks for that idea.

 

Forgot to mention... The gravel and holes in the PVC only needed where the pooling occurs.  The rest can be buried to the drainage area.

Cheers

Have you asked the local gran and pop hardware supplier? Usually if they don't know don't waste any more time. 

You could also use a length of roof gutter if you can find a metal grate to fit on it. I have seen them but cannot remember where to buy, sorry.

 

While you are looking let me know if you see any subsoil drainage pipe for a retaining wall. Otherwise I will need to use PVC pipe as #2 said.

Decided to make like a “U” shaped channel from cement, with a slight fall, and back filled with small rocks,stones

Thanks for sparking an idea.

19 minutes ago, Monkeypants said:

Decided to make like a “U” shaped channel from cement, with a slight fall, and back filled with small rocks,stones

Thanks for sparking an idea.

Well...  IMO that could work for a while.  But it will eventually fill with debris/silt/etc. and you will be back where you started.  Leave out the gravel would be better in that case.  Then you could always flush it.  Google "French drain" (which is basically what I proposed) and maybe you will get some more ideas.  Cheers.