On this one our customer had a mix of different concrete slabs poured at different times and at different elevations. That combined with broken and sinking concrete made for a dangerous situation. These guys move gas cylinders in and out of the shop with their forklift. Running a forklift over uneven pavement is a good way to drop whatever load you may be moving. So in this situation, we were able to replace all the different pieces of concrete with one, that gives these guys easy and safe access to the shop and storage.