Leveling basement floor while keeping it sloping to the drain?

Question

I am having similar problem with the basement slope being exceptionally steep around the floor drain (similar to this: How do I level a basement floor but not the slab underneath?). The discussion there seems to lead to a specific solution:

1. Extend the drain to the new level
2. Pour self-leveling cement to raise the floor
3. Create channels in the freshly poured cement for the water to drain

So the questions are:

• Is that a practical solution to this problem?
• If so, which method would be most effective in crating these water channels?
  • Using a wide screwdriver (how do you maintain consistent slope without displacing surrounding concrete)?
  • Laying down a pattern of 1/2" dowls/PVC pipes (how do you construct this pattern? what pattern would work best?)
  • What about cutting them in with a circular saw after the concrete sets (seems messy, time consuming, producing narrow channels with no slope?)

Well, as they say, a picture is worth a thousand words. So, ideally, I would like to see this method in action or in its finished state.

PS: I am also considering laying down Delta FL over the entire area to act as a vapor barrier/subfloor; laminate on top...

Answer 1

Personally I avoid cutting and pouring concrete. I would use underfloor leveling blocks and a joist system. The drain system is undisturbed and the air space would be an advantage if there ever was a water problem.