Concrete grinding is often used in Colorado to avoid dangerous tripping hazards. It is a low cost process as an alternative to removing and replacing entire sections of concrete.
Concrete grinding is often used by retailers, in shopping centers, HOA boards, public sidewalks and high pedestrian traffic areas. It is a quick and economical fix to avoid any future trips or lawsuits.
By the city of Denver standards any concrete that has 3/4″ of an inch or greater rise or lip to it, is considered a tripping hazard.