Ok, then 2". Lol i'm not home so i'm guessing. I
The drain is about the size of a shower stall drain. As far as dricore, it probably works good, but i'm sure is much more expensive than just leveling it off. Also, I think someone asked, there is a dump pump on the other side of the basement
That was "sump pump".
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."
B. Franklin 1759