أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Thanks for invitation, and I am really sorry for my late, because I were had a lot of work.
Possibly a rockbolts with resin wil do the trick in this case concrete quality and thickness is a factor
You have to hack open the wall to anchor the landing reinforcement into it; possibly, tie the landing reinforcement to the wall reinforcement. This way, the landing would act monolithically with the wall.
drilling and using screws or welding is appropriate