Question about the proper way to check for a level car when the floor is uneven

I was working on a traction job in a 70s office building last week, and the concrete pit floor is a solid inch out of level corner to corner. I see a lot of guys just trusting the floor level marks on the rails, but on a bad floor like that, it throws the whole car alignment off. I ended up using a laser level from the overhead beam to get my true plumb line for the guide rails. How do you all handle this? Is there a better or faster method you use to find true level when the building itself isn't square?

2 comments

2 Comments

alexlewis3d ago

Honestly, that laser trick is pretty smart. It reminds me of a time we were setting up a machine base on a factory floor that was just as bad, maybe worse. We ended up stretching mason's line across the room from known good points on the columns, because the whole slab was like a soup bowl. Sometimes you just have to ignore the floor completely and find your own reference.

dianab683d ago

Yeah, it's like that with so many things, you know? You can't trust the obvious starting point. I see it all the time trying to hang pictures in my old house, the walls are so crooked you have to measure from the ceiling down, not the floor up. The given reference is just broken sometimes, lol.