Quote:
Originally Posted by OtayBW
Who says we're doing it on a wavy concrete floor? Geez...
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I've never seen a concrete floor that wasn't wavy. They screed the concrete with a 2×4, then hand trowel the concrete to make a smooth surface, but it's never very flat.
Get a 6 foot level and place it on the floor. With feeler gauges, you'll probably find some significant ups and downs.
Working in the machine shop business for many yeas gives me an appreciation for a flat surface.
Building a house showed me how uneven most concrete floors really are.
If you laid a 4x8 of 3/4" MDF on the floor, it would make a more suitable measuring surface.