Library of Congress Classification System
T - Technology    

T General Technology
TA General Engineering, General Civil Engineering
TC Hydraulic and Ocean Engineering
TD Environmental Technology, Sanitary Engineering
TE Highway Engineering
TF Railroads
TG Bridge Engineering
TH Buildings
TJ Mechanical Engineering
TK Electrical Engineering, Nuclear Engineering
TL Motor Vehicles, Aeronautics, Astronautics
TN Mining, Metallurgy
TP Chemical Technology
TR Photography
TS Manufactures
TT Arts and Crafts, Handicrafts
TX Home Economics

T 1-995 General Technology.
10.5-11.9 Communication of Technical Information
11.95-12.5 Industrial Directories
55-55.3 Industrial Satety, Industrial Accident Prevention
55.4-60.8 Industrial Engineering, Management Engineering
57-57.97 Applied Mathematics, Quantitative Methods
57.6-57.97 Operations Research, Systems Analysis
58.4 Managerial Control Systems
58.5-58.64 Information Technology
58.6-58.62 Management Information Systems
58.7-58.8 Production Capacity, Manufacturing Capacity
59-59.2 Standardization
59.5 Automation
59.7-59.77 Human Engineering in Industry, Man-Machine Systems
60-60.8 Work Measurement, Methods Engineering
61-173 Technical Education, Technical Schools
173.2-174.5 Technological Change
175-178 Industrial Research, Research and Development
201-342 Patents, Trademarks
351-385 Mechanical Drawing, Engineering Graphics
391-995 Exhibitions, Trade Shows, World's Fairs
TA 1-2040 General Engineering, General Civil Engineering.
164 Bioengineering
165 Engineering Instruments, Meters, etc., Industrial Instrumentation
166-167 Human Engineering
168 Systems Engineering
170-171 Environmental Engineering
177.4-185 Engineering Economy
190-194 Management of Engineering Works
197-198 Engineering Meteorology
213-215 Engineering Machinery, Tools, and Implements
329-348 Engineering Mathematics, Engineering Analysis
349-359 Mechanics of Engineering, Applied Mechanics
365-367 Acoustics in Engineering, Acoustical Engineering
401-492 Materials of Engineering and Construction, Mechanics of Materials
495 Disasters and Engineering
501-625 Surveying
630-695 Structural Engineering (General)
703-712 Engineering Geology. Rock and Soil Mechanics, Underground Construction
715-787 Foundations, Earthwork
800-820 Tunnels, Tunneling
1001-1280 Transportation Engineering (General)
1501-1820 Applied Optics, Photonics
2001-2040 Plasma Engineering, Applied Plasma Dynamics
TC 1-1800 Hydraulic and Ocean Engineering.
1-978 Hydraulic Engineering
160-181 Technical Hydraulics
183-201 General Preliminary Operations, Dredging, Submarine Building
203-380 Harbors and Coast Protective Works, Coastal Engineering, Lighthouses
401-506 River, Lake, and Water-Supply Engineering (General)
530-537 River Protective Works, Regulation, Flood Control
540-558 Dams, Barrages
601-791 Canals and Inland Navigation, Waterways
801-978 Irrigation Engineering, Reclamation of Wasteland, Drainage
1501-1800 Ocean Engineering
TD 1-1066 Environmental Technology, Sanitary Engineering.
159-168 Municipal Engineering
169-17185 Environmental Proctection
172-193.5 Environmental Pollution
194-195 Environmental Effects of Industries and Plants
201-500 Water Supply for Domestic and Industrial Purposes
419-428 Water Supply
429.5-480.7 Water Purification, Water Treatment and Conditioning, Saline Water Conversion
481-493 Water Distribution Systems
511-780 Sewage Collection and Disposal Systems
783-812.5 Municipal Refuse, Solid Wastes
813-870 Street Cleaning, Litter and its Removal
878-894 Special Types of Environmental Pollution (including soil, air, and noise pollution)
895-899 Industrial and Factory Sanitation and Wastes
920-934 Rural and Farm Sanitary Engineering
940-949 Low Temperature Sanitary Engineering
1020-1066 Hazardous Substances and Their Disposal
TE 1-450 Highway Engineering.
175-176.5 Highway Design, Interchanges and Intersections
177-178.8 Roadside Development, Landscaping
200-205 Materials for Roadmaking
206-209.5 Location Engineering
210-228.3 Construction Details (including foundations, maintenance, equipment)
250-278.8 Pavements and Paved Roads
279 Streets
279.5-298 Pedestrian Facilities
280-295 Sidewalks, Footpaths, Flagging
298 Curbs, Curbstones
TF 1-1620 Railroads.
200-320 Railway Construction
340-499 Railway Equipment and Supplies
501-668 Railway Operation and Management
670-851 Local and Light Railways
840-851 Elevated Railways and Subways
855-1127 Electric Railways
1300-1620 High Speed Ground Transportation
TG 1-470 Bridge Engineering.
TH 1-9745 Buildings.
845-895 Architectural Engineering, Structural Engineering of Buildings
900-915 Construction Equipment in Buildings
1000-1725 Systems of Building Construction.
2025-3000 Details in Building Design and Construction (including walls, roofs)
3301-3411 Maintenance and Repair
4021-4977 Buildings: Construction with Reference to Use (including public buildings, dwellings)
5011-5701 Construction by Phase of Work
6014-6081 Environmental Engineering of Buildings, Sanitary Engineering of Buildings
6101-6887 Plumbing and Pipefitting
7005-7699 Heating and Ventilation, Air Conditioning
7700-7975 Illumination, Lighting
8001-8581 Decoration and Decorative Furnishings
9025-9745 Protection of Buildings (including protection from dampness, fire, burglary)
TJ 1-1570 Mechanical Engineering.
212-225 Control Engineering
268-740 Steam Engineering
1125-1345 Machine Shops and Machine Shops Practice
1480-1496 Agricultural Machinery
TK 1-9971 Electrical Engineering, Electronics, Nuclear Engineering.
301-399 Electric Meters
452-454.4 Electric Apparatus and Materials, Electric Circuits, Electric Networks
1001-1841 Production of Electric Energy or Power, Powerplants, Central Stations
2000-2891 Dynamoelectric Machinery and Auxiliaries (including generators, transformers, motors)
2896-2985 Production of Electricity by Direct Electricity Conversion
3001-3521 Distribution or Transmission of Electric Power
4001-4102 Applications of Electric Power
4125-4399 Electric Lighting
4601-4661 Electric Heating
5101-6720 Telecommunication (including telegraphy, telephone, radio, television)
7800-8360 Electronics
7885-7895 Computer Engineering, Computer Hardware
8300-8360 Photoelectronic Devices (General)
9001-9401 Nuclear Engineering, Atomic Power
9900-9971 Electricity for Amateurs, Amateur Constructors' Manuals
TL 1-4050 Motor Vehicles, Aeronautics, Astronautics
1-484 Motor Vehicles, Cycles
500-777 Aeronautics, Aeronautical Engineering
780-785.8 Rockets
787-4050 Astronautics, Space Travel
TN 1-997 Mining Engineering, Metallurgy.
TP 1-1185 Chemical Technology.
155-156 Chemical Engineering
200-248 Manufacture and Use of Chemicals
315-360 Fuel
368-456 Food Processing and Manufacture
480-498 Low Temperature Engineering, Refrigeration
500-660 Fermentation Industries, Alcohol
690-692.4 Petroleum Refining and Products
751-762 Gas Industry
785-888 Ceramics, Clay Industries, Glass, Cement Industries
890-933 Textile Dyeing and Printing
934-944 Paints, Pigments, Varnishes
1080-1185 Polymers, Plastics
TR 1-1050 Photography.
TS 1-2301 Manufactures.
155-194 Production Management
195-198.8 Packaging
200-770 Metal Manufactures, Metalworking
800-937 Wood Technology
940-1070 Leather Industries
1080-1268 Paper Manufacture, Woodpulp Industry
1300-1865 Textile Industries
1870-1935 Rubber Industry
1950-1982 Animal Products
2120-2159 Cereal and Flour, Milling Industry
2220-2283 Tobacco Industry
TT 1-999 Arts and Crafts, Handicrafts.
161-170.7 Manual Training, Industrial Arts, School Shops
180-200 Woodworking, Furniture Making, Upholstering
205-267 Metalworking
300-385 Painting, Industrial Painting
387-410 Soft Home Furnishings
490-695 Clothing Manufacture, Dressmaking, Tailoring
697-926 Needlework, Decorative Crafts
950-979 Hairdressing, Barbers' Work
980-999 Laundry Work
TX 1-1107.4 Home Economics.
301-329 The House: Logistics, Finance, Care
341-641 Nutrition, Food and Food Supply
643-840 Cookery
901-953 Hotels, Clubs, Restaurants, Food Service
1100-1107.4 Mobile Home Living

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