13 00 00 Special Construction
13 01 00 Operation and Maintenance of Special Construction
13 01 10 Operation and Maintenance of Special Facility Components 13 01 11 Operation and Maintenance of Swimming Pools 13 01 12 Operation and Maintenance of Fountains 13 01 13 Operation and Maintenance of Aquariums 13 01 14 Operation and Maintenance of Amusement Park Structures and Equipment 13 01 18 Operation and Maintenance of Ice Rinks 13 01 20 Operation and Maintenance of Special Purpose Rooms 13 01 21 Operation and Maintenance of Controlled Environment Rooms 13 01 23 Operation and Maintenance of Planetariums 13 01 30 Operation and Maintenance of Special Structures 13 01 40 Operation and Maintenance of Integrated Construction 13 01 46 Maintenance of Lightning Protection Systems 13 01 49 Operation and Maintenance of Radiation Protection 13 01 50 Operation and Maintenance of Special Instrumentation 13 01 51 Operation and Maintenance of Stress Instrumentation 13 01 52 Operation and Maintenance of Seismic Instrumentation 13 01 53 Operation and Maintenance of Meteorological Instrumentation