Compacting stone depth?

[domdee]

How deep can I compact stone in one go? Can I do full depth at approx 6-8” all in one go or should I do it in 2 layers? Soft ground.
Wanted to do it in one so I could have all stone tipped in the hole to save shovel and barrow work.

Thanks in advance.

 

[scbk]

Depends what you're compacting it with, type of material, and what's going on top of the stone when you're done?

If it was a big double drum vibrating roller to make a hard standing, then crack on.
A lightweight whacker plate isn't going to do much to that thickness.

 

[domdee]

I’ll be hiring a whacker plate. Type 1 kind of stuff. Or more likely crushed brick. Concrete slab to go on top for timber framed work shop. Would you recommend more than 2 layers then?

 

[domdee]

And is it worth putting a geomembrane down first?