CSI 2004 Categories
Code	Description
00	Procurement and Contracting Requirements
01	General Requirements
02	Existing Conditions
03	Concrete
04	Masonry
05	Metals
06	Wood, Plastics, and Composites
07	Thermal and Moisture Protection
08	Openings
09	Finishes
10	Specialties
11	Equipment
12	Furnishings
13	Special Construction
14	Conveying Equipment
21	Fire Suppression
22	Plumbing
23	Heating, Ventilating, and Air Conditioning (HVAC)
25	Integrated Automation
26	Electrical
27	Communications
28	Electronic Safety and Security
31	Earthwork
32	Exterior Improvements
33	Utilities
34	Transportation
35	Waterway and Marine Construction
40	Process Integration
41	Material Processing and Handling Equipment
42	Process Heating, Cooling, and Drying Equipment
43	Process Gas and Liquid Handling, Purification, and Storage Equipment
44	Pollution and Waste Control Equipment
45	Industry-Specific Manufacturing Equipment
46	Water and Wastewater Equipment
48	Electrical Power Generation