We’re in the digging stage. I noticed the tanning shelf looked short, it’s supposed to be 5’. Obviously I’m not a pool builder and am embarrassed to ask them for fear they think I’m questioning them. How after getting robbed on a bad deck from previous contractor, I’m concerned of not speaking up when I see things might not be right. So I figure I’ll ask here. Is the ground shorter because rebar and gunite will take the space? It’s measuring 4’ instead of 5’. However the other parts of the pool dug from earth are spot on, pic included. Insight would be appreciated.