Water Mains Trench

[Samsmith_123456]

Hi guys,

Hope all is well.

I am going to dig my first ever 750mm deep trench to lay a couple of MDPE pipes.

Once I've dug it out and laid the pipe what material do I use to back fill?

 

[bernardgreen]

Sand above and below. No sharp stones or gravel in the sand. Tamp it down and then back fill with the stuff you dug out for the trench.

How deep the sand has to be depends of what will be above the ground, cars on a driveway ornamental grass.

I recall we put about 100mm above and below ( Water company's recommendation )

 

[Samsmith_123456]

Okay thanks so no hardcore