MDPE main supply: ducted or not?

[Dunc]

I need to install the MDPE water pipe from my boundary box to the house.  There is no option but to have it under the driveway, which will be gravel over MOT. I'll bury the pipe at least 900mm down. Should I use a duct in the bottom of the trench, or will a bit of sand under and over the pipe be sufficient?

Ta.

[saveasteading]

No need for a duct, and it's difficult to get an mdpe pipe through it.

Be sure to place blue warning tape half way above it.

[Nickfromwales]

Don’t bother with a duct. Sharp sand or pea shingle below / above. 👍🫡

[Russell griffiths]

900 is too deep unless your in the artic. 
700 standard. 

[Oz07]

1 minute ago, Russell griffiths said:

900 is too deep unless your in the artic. 
700 standard. 

Think severn trent ask for 750 min here. Then their boundary boxes struggle to go that low. 

[AartWessels]

Dont know where you are, but Scottish Water doesn't even allow ducting it. 

Their argument is that ducting makes it hard or impossible to find leaks. 

I found that interesting, as ducting under the main road was a must-have for them, using MCLP under my driveway was a must for them (as apparently the driveway and parking are a big risk for oil leaks etc. which then can penetrate standard MDPE pipe. ) When I told them that was unlikely to happen in a ducted pipe, they told me I couldn't duct the water pipe on my own land. Somehow this feels a bit wrong, but what do I know 😁

 

So to keep everyone happy, I've put the (judging by the price, gold-layered) MCLP embedded in pea gravel directly in the ground, 900mm deep. 

 

Don't forget the warning lint.