Flag-on edge retaining wall

[Dave260]

Hi all. I'm about to build a short (2m) flag-on-edge wall. I understand how it works apart from one aspect. Should I initially lay a flat footing, then when that is set arrange the flags, haunching and back-filling, or should the slabs be set into wet concrete? The problem I see with the latter is the slabs sinking to different levels, with the former, losing strength at the 'join' of the two lots of concrete. Any advice appreciated.

thanks,

[lutonlagerlout]

the slabs need to be laid slightly off vertical in a dry lean type concrete about 300mm thick
once this has been done they can be haunched but must be left for 24 hrs before being backfilled
cheers LLL

[Pablo]

No need for a footing just bed them on 100mm of dryish concrete and haunch them with a sticky wet concrete to hold them in place.

[Dave260]

Thanks guys - just what I needed to know.