Not sure exactly what you're asking. A shower pan (the floor) needs to be sloped to the drain, and needs a lip so Corian walls could be applied to make the whole thing waterproof. A typical tiled shower has a liner that goes at least a few inches above the top of the curb. Anything less, and you are at risk for failure.
If you have a Corian pan, I'd be surprised if it could accept tile.
For shower construction help, you may want to check out www.johnbridge.com.