22 00 00 Plumbing 22 01 00 Operation and Maintenance of Plumbing 23 00 00 Heating, Ventilating and Air Conditioning (HVAC) 23 01 00 Operation and Maintenance of HVAC Systems 23 09 00 Instrumentation and Control for HVAC 25 00 00 Integrated Automation

23 00 00 Heating, Ventilating and Air Conditioning (HVAC) 23 01 00 Operation and Maintenance of HVAC Systems 23 06 00 Schedules for HVAC 23 07 00 HVAC Insulation 23 08 00 Commissioning of HVAC 23 09 00 Instrumentation and Control for HVAC 23 20 00 HVAC Piping and Pumps 23 21 00 Hydronic Piping and Pumps 23 23 00 Refrigerant Piping 23 52 00 Heating Boilers 23 57 00 Heat Exchangers for HVAC 23 65 00 Cooling Towers

22 01 00 Operation and Maintenance of Plumbing 22 09 00 Instrumentation and Control for Plumbing 22 14 00 Facility Storm Drainage 22 60 00 Gas and Vacuum Systems for Laboratory and Healthcare Facilities 22 63 00 Gas Systems for Laboratory and Healthcare Facilities 23 01 00 Operation and Maintenance of HVAC Systems 23 08 00 Commissioning of HVAC 23 09 00 Instrumentation and Control for HVAC 23 20 00 HVAC Piping and Pumps 23 21 00 Hydronic Piping and Pumps 23 52 00 Heating Boilers 33 41 00 Storm Utility Drainage Piping 40 10 00 Gas and Vapor Process Piping 42 11 00 Process Boilers

23 08 00 Commissioning of HVAC 23 09 00 Instrumentation and Control for HVAC 25 00 00 Integrated Automation 26 00 00 Electrical 27 00 00 Communications 28 00 00 Electronic Safety and Security

23 00 00 Heating, Ventilating and Air Conditioning (HVAC) 23 01 00 Operation and Maintenance of HVAC Systems 23 09 00 Instrumentation and Control for HVAC 25 00 00 Integrated Automation

21 09 00 Instrumentation and Control for Fire-Suppression Systems 23 09 00 Instrumentation and Control for HVAC 25 00 00 Integrated Automation 28 00 00 Electronic Safety and Security 28 05 00 Common Work Results for Electronic Safety and Security 28 13 00 Access Control 28 23 00 Video Surveillance 28 31 00 Fire Detection and Alarm

23 00 00 Heating, Ventilating and Air Conditioning (HVAC) 23 01 00 Operation and Maintenance of HVAC Systems 23 05 93 Testing, Adjusting and Balancing for HVAC 23 08 00 Commissioning of HVAC 23 09 00 Instrumentation and Control for HVAC 23 52 00 Heating Boilers 25 00 00 Integrated Automation