There are many reasons a pad will eventually slope and it's seldom the fault of the builder.
The key is to identify the issue before it becomes a major problem because Water is a Powerful Force.
We have an entire section on Trip Hazards and why you should NEVER Grind down a good section trying to fix a Bad one. (See the menu above.)
Grinding virtually NEVER fixes the problem, it's a quick band-aid and the problems Always return.
Most companies don't have the ability to identify voids leaving the owners at the mercy of sinking concrete and being Reactive.
Get Proactive, correct issues before they become major problems like the one above.
UofU Olympic Village, Utah State, Several Cities and others.