Besser Block retaining wall footing

Hi All,

I have engineered plans for a brick/sleeper retaining wall, however I dont have besser blocks in my CDC plans.

I have reached out to an engineer but have a structural landscaper giving me a few options regarding the footing.

For anyone that has done a besser block retaining wall, how much footing did you have to do also if you have your plans handy would be great to know as I need to discuss budget etc with my landscaper.

Also what was your experience are you happy with a besser block high retaining wall? did it start falling over?

Thanks!