Backfilling outside drain

[Bern240480]

Hi guys, first post so go easy

I've just had my plumbers fit all the plastic drain pipes etc outside my bungalow. They said its all working, all I need to do is backfill the hole that the pipes go into. I've been told I need to use pea shingle.. how exactly do I go about filling the hole in?

I'm a newbie at this, so assume I know absolutely nothing please

Thanks in advance
Bern

 

[Bahco]

Have BCO signed it off

 

[Bern240480]

Yes, the building control guy came round and was happy with the work. Just not sure how to cover all the pipework over. I had a look on the net and read that you need 100mm of pea shingle round the pipes, but is that round the horizontal pipes, or the bit of the vertical pipe thats in the ground or what? Not really sure.

 

[seco services]

10mm shingle will be ok. what was the pipes bedded on when layed ?

 

[Bern240480]

Pipes are not really bedded on anything, there is some hardcore etc in the hole at the moment. I know this probably sounds stupid to you, but when I put shingle in the hole, how much do I put in?

Fill the entire hole up? Do I need to support the shingle so it stays around the pipes and doesn't just run everywhere?

Do I then put hardcore on top of that so I can concrete over it all?

 

[seco services]

http://pdf.hunterplastics.co.uk/pdf/underground/ugt5.pdf

have a read for yourself maybe easyer

 

[Bern240480]

Thank you very much, thats the sort of specifics I needed. Very helpful Cheers for a quick reply too.