angoubre

I need to know if a step can be added in my tanning ledge. This is where you will enter the pool. The man that shot the gunite said I didn't need one. It's going to be 9inches, deep right now the top of the bond beam is twelve inches I'm going to have cantilever deck which will add 3 1/2 inches that a total of 15 1/2inches I know i need a step, but the gunite has been shot already. Can I add one now made out of concrete. Please Help!