13010 - Air Supported Structures	13200 - Liquid and Gas Storage Tanks
13020 - Integrated Assemblies	13220 - Filter Underdrains and Media
13030 - Special Purpose Rooms	13300 - Utility Control Systems
13060 - Insulated Structures	13400 - Industrial and process Control Systems
13080 - Sound, Vibration and Seismic Control	13600 - Solar Energy Systems
13090 - Radiation Protection	13700 - Wind Energy Systems
13120 - Pre-engineered Structures	13800 - Building Automation Systems
13150 - Aquatic Facilities	13900 - Fire Suppression and Supervisory Systems