Hey mama:
You definitely want to pitch the floor to the drain...even if forcing toward the back wall.
The flange of the drain needs to be installed as part of the shower pan...here, the shower pan membrane gets glued (so you need membrane glue) into the flange of drain and then top part of the drain gets bolted to the drain, locking the membrane between the flange and upper part of drain (see pic.).
Then you need to install small gravel stone or similar around drain so the WEEP holes in the drain work correctly after concrete is poured.
Then you duct tape the drain.
Then you set the drain at finished floor height minus 3/8" or so and pour the concrete and screed the concrete to pitch it to drain. Once all concrete poured and pitched to drain, then you want to LOOSEN the drain by spinning back and forth and set a tile up to the drain.......then RAISE the drain so it becomes just slightly
higher than dry fit tile. Later, will install the tile in thinset mortar which will raise it EQUAL to the drain height.
Keep spinning the drain for a little while so can make adjustment to drain in case you missed height. This way you are guaranteed to have drain height equal finish floor height.
Here is a great site for custom showers....I would follow the advice they give:
How to Build a Shower Pan
Let me know if you need more....MARK
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whew i think i got the jist of it though didnt know bout the gluing down part or the adjusting of the drains dry fit, thanks for the info. later mark , Brenda p.s. and the link
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