Damping material is installed on a structure by moving a material placement head over the structure, and using the head to place the material on the structure. A route calculation program adapted to find at least one solution route, between a first location and a second location on a road network, identifies a segment with a first node and a second node in the road network. The deposit accepting device is operative to receive a stack of sheets and to separate each sheet from the stack through operation of a picker.