Elevation Info

[Alwayslearningelec]

I see NAVD is the north american vertical datum. I'm trying to covert or find this number 13 or 14 and corrosion it to an elevation AFF( above finished floor).

 

[Alwayslearningelec]

I did come across this.

I'm just trying to determine at what height it the DFE as we can use MC cable above that.