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CIBSE Knowledge Taxonomy

Mechanical 
Heating
Ventilation 
Refrigeration and air conditioning
Specialist extract/ exhaust systems
Smoke control
Pipeline distribution systems (natural gas, liquid fuels, medical gas, compressed air & vacuum)
Electrical
Extra low voltage
Low voltage
Medium voltage
High voltage
Local power generation & standby power 
Earthing & bonding/ Lightning protection
Communications
Audio-visual
Electric vehicle charging
Public Health
Water
Drainage
Gas
Lighting
Daylight/ sunlight 
Electric lighting
Lighting energy
Fire safety
Fire life safety  
Fire protection
Fire detection
Fire notification
Building fabric
Façades
Access & maintenance
Transportation systems in buildings
Lifts
Escalators
Moving walks
Stairlifts and lifting platforms
Building intelligence
Controls
Smart buildings
Security 
Physical security
Security systems (access control, surveillance, intruder alarm)
Cyber security
Digital
Building information modelling (BIM)
Digital engineering
Digital construction
Sustainability & ESG
Climate change mitigation 
Climate change adaptation
Circular economy
Biodiversity & natural capital
Diversity & inclusion
Social value
Health, wellbeing and safety