If you really want to know how level and/or smooth a concrete floor is, you can start with a long level or some other object with a true edge. Drag that across the floor from any two perpendicular directions. Look, listen and feel. In regard to looking, visually check for space showing beneath the edge that indicates low spots. In regard to listening, bumps or “hills” will usually cause some auditory signal such as a click or a clank or other noise of similarly sophisticated description. As to feel, well, you will feel the bumps.
If you need a good place to learn and apply your learning, come on over. I’ll take you downstairs to the current project center, which is to eventually become a bedroom. Lots of opportunities there for learning about level, smoothness and the lack thereof in both cases.
I’m not sure whether this particular floor was a joint project sponsored by Hire the Handicapped and the American Society for Blind Masons or if it was just done by a series of less than competent workers. A third option is that it was done in a few stages by only one incompetent worker. Whatever the explanation in regard to origination, one thing is clear; this is not exemplary concrete work.
Bumps, dips, swirls, rough patches, pockets, ridges and ruts. It looks like some fifth grader started out making a 3-D topographical map of northeast Oklahoma. At some point, the parents stepped in and said, “We’ll never get that loaded into the back of the station wagon,” and decided to build a garage underneath the house. “If we park the car over here in this corner, that’ll cover up most of the worst section.”
And so, I’ve got some work to do before the prospective bedroom has a finished floor. Of course, there is another way to find all those defects; I could just start laying floor tile. That’ll show you where the rough spots are. Problem is, it’s a bit late for repairing the concrete at that point. Doesn’t matter how nice the tile is if it doesn’t have a good foundation. Which is kind of why salvation always begins with faith and repentance.