Howdy,
I've thought about it, but won't be doing it. I'll have the floor flat and sloped a little toward the overhead door.
Adding a drain introduces complications in where to take the water, and also makes the floor non-flat, which complicates life when used as a shop. When the Garage Mahal gets built and not having a drain irritates me enough, I can always put one of those long skinny grate style drains just in front of the door.
Mark
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