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Library of Congress Classification System

T - Technology

Click on subject heading links for more detailed breakdown and call number ranges of classification section.

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 Building Construction
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

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Detailed Call Number Ranges for Section: T - Technology

T 1-995 General Technology.
10.5-11.9 Communication of Technical Information
11.95-12.5 Industrial Directories
14.7-33 History of Technology
44-51 General Works
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
174 Engineering Design
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 Protection
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 Pollution
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.
21-127 Country Divisions
215-255 Bridge Legislation and Laws (now Class K)
327-418 Special Types of Bridges
420-470 Bridges for Special Uses
TH 1-9745 Building Construction
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.
163.12-163.25 Power Resources
163.26-163.5 Energy Conservation
170-179 Mechanics Applied to Machinery, Dynamics
181-210 Mechanical Movements
210.2-211.47 Mechanical Devices and Figures, Automata, Ingenious Mechanisms, Robots (General)
212-225 Control Engineering Systems, Automatic Machinery (General)
227-240 Machine Design and Drawing
241-254.7 Machine Construction (General)
255-265 Heat Engines
266-267.5 Turbines, Turbomachines (General)
268-740 Steam Engineering
603-695 Locomotives
751-805 Miscellaneous Motors and Engines (including gas, gasoline, diesel engines)
807-830 Renewable Energy Sources
836-927 Hydraulic Machinery
940-940.5 Vacuum Technology
950-1030 Pneumatic Machinery
1040-1119 Machinery Exclusive of Prime Movers
1125-1345 Machine Shops and Machine Shops Practice
1350-1418 Hoisting and Conveying Machinery
1425-1475 Lifting and Pressing Machinery
1480-1496 Agricultural Machinery, Farm Machines
1501-1519 Sewing Machines
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, radar, 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.
165-205 Study and Teaching
275-269 Mineral Deposits, Metallic Ore Deposits
270-271 Prospecting
275-325 Practical Mining Operations, Safety Measures
400-580 Ore Deposits and Mining of Particular Metals
600-799 Metallurgy
799.5-948 Nonmetallic Minerals
950-997 Building and Ornamental Stones
TP 1-1185 Chemical Technology.
155-156 Chemical Engineering
200-248 Manufacture and Use of Chemicals
248.13-248.65 Biotechnology
250-261 Industrial Electrochemistry
267.5-301 Explosives and Pyrotechnics
315-360 Fuel
368-456 Food Processing and Manufacture
480-498 Low Temperature Engineering, Cyrogenic Engineering, Refrigeration
500-660 Fermentation Industries, Beverages, Alcohol
670-699 Oils, Fats, and Waxes
690-692.4 Petroleum Refining and Products
751-762 Gas Industry
785-869 Ceramics, Clay Industries, Glass
875-888 Cement Industries
890-933 Textile Bleaching, Dyeing, Printing, etc.
934-945 Paints, Pigments, Varnishes, etc.
1080-1185 Polymers, Plastics
TR 1-1050 Photography.
250-265 Cameras
287-500 Photographic Processing
504-508 Transparencies, Diapositives
510-545 Color Photography
550-581 Studio and Laboratory
590-620 Lighting
624-835 Applied Photography
845-899 Cinematography, Motion Pictures
925-1050 Photomechanical Processes
TS 1-2301 Manufactures.
155-194 Production Management
195-198.8 Packaging
200-770 Metal Manufactures, Metalworking
780-788 Stonework
800-937 Wood Technology, Lumber
840-915 Wood Products, Furniture
920-937 Chemical Processing of Food
940-1047 Leather Industries, Tanning
1080-1268 Paper Manufacture and Trade, Woodpulp Industry
1300-1865 Textile Industries
1870-1935 Rubber Industry
1950-1982 Animal Products
2120-2159 Cereal, Grain and Flour, Milling Industry
2220-2283 Tobacco Industry
2284-2288 Animal Feeds and Feed Mills, Pet Food Industry
TT 1-999 Arts and Crafts, Handicrafts.
161-170.7 Manual Training, Industrial Arts, School Shops
174-176 Articles for Children
180-200 Woodworking, Furniture Making, Upholstering
201-203 Lathework, Turning
205-267 Metalworking
300-382.8 Painting, Industrial Painting, Wood Fininshing
387-410 Soft Home Furnishings
490-695 Clothing Manufacture, Dressmaking, Tailoring
697-927 Home Arts, Home Crafts (including sewing, embroidery, decorative crafts)
950-979 Hairdressing, Beauty Culture, 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
851-885 Dining-Room Service
901-946.5 Hospitality Industry, Hotels, Clubs, Restaurants, Food Service, etc.
950-953 Taverns, Barrooms, Saloons
955-985 Building Operation and Housekeeping
1100-1105 Mobile Home Living
1110 Recreational Vehicle Living

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[an error occurred while processing this directive] Last updated: November 17, 2005