A major leak in the lobby of the theatre turned out to be badly leaking cast iron pipes in the ceiling for the utility room that sits above the lobby. This became very apparent when I ran the air conditioner in the lobby for a show and when I came back the next morning, two tiles had ballooned and filled with water and another water soaked tile split in half and dropped to the floor. The condensation for the front AC empties into a floor drain in the utility room and the pipes connected to the drain were leaking.