The following minimum criteria should be utilized when designing a narrow aisle forklift system:

Floors should meet or exceed an F - 50 floor rating for levelness and flatness. The sub floor should be capable of supporting the rack structure and rolling load (loaded forklift) traveling over the same path.

Floor joints should run parallel to the working aisle under the rack structure. When unavoidable the floor joints should cross the working aisle perpendicular to the rack structure, and where ever possible outside of the working aisle.

The video shows a mobile profiling device used to measure the floor levelness over the simulated vehicle path.