AMI completed all mechanical work on the construction of Anchorage’s largest concrete vault. Construction consisted of a large (31-foot by 49-foot) buried concrete water distribution valve vault with valves, flow meters, and appurtenances. Piping included 42-inch and 36-inch water transmission mains, two 24-inch ductile iron pipes, 48-inch water transmission main, and 12-inch CPEP pipe for storm drain.