Extending outdoor tap and drain

[DIwhYdidIstartThis]

Hello all,

I'm would like to extend an existing outside tap to another point in the garden. I'm about to pour a concrete patio and was hoping to run the water line underneath. There are existing drain (and who knows what) pipes running along the same wall so I'm nervous about digging too far down.

1. What is the minimum distance I can lay this new water line considering it will be covered in concrete / patio slabs?
2. What kind of pipe should I use?
3. Should I run it through another protective pipe (e.g. sewer pipe)?
4. Is there any type of underground insulation I should consider to protect it from freezing?

I would also like to install a gully under this new tap and run it back to the existing drain.

1. Is it ok to tap into the side of this drain using e.g. a Y junction or does it need to go some kind of special bottle type junction?
2. Do I need to install a gully trap considering it is just for the outdoor tap?

Thanks in advance for the help

 

[ShaunCorbs]

Needs to be 750mm deep

Ideally 20mm blue poly eg the stuff they use for water mains etc

I would put it in a bit of ducting 50mm

Y and a back inlet gully would be fine providing you identify flow direction

 

[DIwhYdidIstartThis]

Needs to be 750mm deep

Ideally 20mm blue poly eg the stuff they use for water mains etc

I would put it in a bit of ducting 50mm

Y and a back inlet gully would be fine providing you identify flow direction

Thanks ShaunCorbs,

Is the 750mm deep just for protection from freezing or is there some other (e.g. sanitary) reason?
Is there a particular type of ducting for water pipe or would any do?
Any chance you could elaborate a bit on your last sentence? I don't really get what you mean.

Thanks for your help!

 

[ShaunCorbs]

Thanks ShaunCorbs,

Is the 750mm deep just for protection from freezing or is there some other (e.g. sanitary) reason?
Is there a particular type of ducting for water pipe or would any do?
Any chance you could elaborate a bit on your last sentence? I don't really get what you mean.

Thanks for your help!

750mm is water regs for external pipes for frost and so they don’t get damaged when people dig

Black Twinwall Duct 50mm x 50m Coil

https://www.plastics-express.co.uk/water-warning-tape-150mm-x-365m-p-pm731?search=Warning%20tape

Drainage Bottle Gully Back Inlet Circular Grid - 110mm

Drainage Bottle Gully Back Inlet Circular Grid - 110mm

www.drainagepipe.co.uk

 

[DIwhYdidIstartThis]

Thank you kindly ShaunCorbs,

Your help is very much appreciated!

 

[DIwhYdidIstartThis]

Hi,

I just wanted to clarify a few points to make sure I'm on the same page. You mentioned a back-inlet gully which I was confused by as the proposed new gully would be on the end of the pipe. However, after a bit of reading I'm thinking maybe I'd be better off replacing the existing P-trap gully with a back-inlet bottle gully so that it would be roddable should anything happen down the line (this will all be buried under a poured concrete slab). I would also like to add an additional rain water gully by the boundary wall. Here's a diagram of the current setup:

If I was to add the new garden tap and gully underneath, add the new rain water gully and replace the P-trap gully to future proof and ensure things are easily roddable, the following would be the result:

How does that look?

 

[DIwhYdidIstartThis]

Hi,

I just wanted to clarify a few points to make sure I'm on the same page. You mentioned a back-inlet gully which I was confused by as the proposed new gully would be on the end of the pipe. However, after a bit of reading I'm thinking maybe I'd be better off replacing the existing P-trap gully with a back-inlet bottle gully so that it would be roddable should anything happen down the line (this will all be buried under a poured concrete slab). I would also like to add an additional rain water gully by the boundary wall. Here's a diagram of the current setup:

View attachment 94207

If I was to add the new garden tap and gully underneath, add the new rain water gully and replace the P-trap gully to future proof and ensure things are easily roddable, the following would be the result:
View attachment 94209

How does that look?

Any thoughts on this bottle gully arrangement?