I've got a customer who we just contracted a paver driveway for. After the fact, he decided he wanted a channel drain/grate (the $50-$60 sections from Lowe's or Home Depot) installed across the front of the garage even though its not necessary but he wants it so thats fine. The garage has a concrete floor, the current driveway is asphalt that will be excavated. Fabric, base etc all to be installed. My question is to how to properly install the drain across the threshold? My original thought was to form/pour concrete but thought I would see what "ya'll" have done in the past. Did you just set in on top of the base to the height which is flush with the pavers? They're somewhere around 6", considerably more than a paver. I just don't want any sort of pivoting. In theory, the pavers would lock/hold it in place.