Hello all, nice simple one for someone in the know. We've put a new water mains supply in and have bedded and covered in 75mm of building sand to protect from rocks etc.
Should the rest of the trench be backfilled in the same building sand. Or should it be sharp sand?
We are block paving after if it makes a difference? Could type 1 stone be used?
Excavated material was red clay which was like playdoh it was that wet, this has since been took away on a grab.
I have seen fill sand mentioned but the builders merchants don't sell or know what it is when I ask for it.
Thanks
Should the rest of the trench be backfilled in the same building sand. Or should it be sharp sand?
We are block paving after if it makes a difference? Could type 1 stone be used?
Excavated material was red clay which was like playdoh it was that wet, this has since been took away on a grab.
I have seen fill sand mentioned but the builders merchants don't sell or know what it is when I ask for it.
Thanks