LC Classification: T

T - Technology (General)

TA - Engineering (General). Civil engineering

TC - Hydraulic engineering. Ocean engineering

TD - Environmental technology. Sanitary engineering

TE - Highway engineering. Roads and pavements

TF - Railroad engineering and operation

TG - Bridge engineering

TH - Building construction

TJ - Mechanical engineering and machinery

TK - Electrical engineering. Electronics. Nuclear engineering

TL - Motor vehicles. Aeronautics. Astronautics

TN - Mining engineering. Metallurgy

TP - Chemical technology

TR - Photography

TS - Manufactures

TT - Handicrafts. Arts and crafts

TX - Home economics

For more detailed information, visit the Library of Congress Classification Outline.

T - Technology (General)

• T55.4-60.8 Industrial engineering. Management engineering
• T61-173 Technical education. Technical schools
• T175-178 Industrial research. Research and development
• T201-342 Patents. Trademarks
• T351-385 Mechanical drawing. Engineering graphics
• T391-995 Exhibitions. Trade shows. World's fairs

TA - Engineering (General). Civil engineering

• TA164 Bioengineering
• TA168 Systems engineering
• TA349-359 Mechanics of engineering. Applied mechanics
• TA401-492 Materials of engineering and construction. Mechanics of materials
• TA501-625 Surveying
• TA630-695 Structural engineering (General)
• TA703-712 Engineering geology. Rock mechanics. Soil mechanics. Underground construction
• TA715-787 Earthwork. Foundations
• TA800-820 Tunneling. Tunnel
• TA1001-1280 Transportation engineering
• TA1501-1820 Applied optics. Photonics
• TA2001-2040 Plasma engineering. Applied plasma dynamics

TC - Hydraulic engineering. Ocean engineering

• TC1-978 Hydraulic engineering
• TC203-380 Harbors and coast protective works. Coastal engineering. Lighthouses
• TC401-506 River, lake, and water-supply engineering (General)
• TC530-537 River protective works. Regulation. Flood control
• TC540-558 Dams. Barrages
• TC601-791 Canals and inland navigation. Waterways
• TC801-978 Irrigation engineering. Reclamation of wasteland. Drainage
• TC1501-1800 Ocean engineering

TD - Environmental technology. Sanitary engineering

• TD159-186 Municipal engineering
• TD172-193.5 Environmental pollution
• TD201-500 Water supply for domestic and industrial purposes
• TD511-780 Sewage collection and disposal systems. Sewerage
• TD813-870 Street cleaning. Litter and its removal
• TD895-899 Industrial and factory sanitation
• TD1020-1066 Hazardous substances and their disposal

TE - Highway engineering. Roads and pavements

• TE175-176.5 Highway design. Interchanges and intersections
• TE200-205 Materials for roadmaking
• TE210-228.3 Construction details
• TE250-278.8 Pavements and paved roads
• TE279.5-298 Pedestrian facilities

TF - Railroad engineering and operation

• TF200-320 Railway construction
• TF501-668 Railway operation and management
• TF670-851 Local and light railways
• TF855-1127 Electric railways
• TF1300-1620 High speed ground transportation

TG - Bridge engineering

TH - Building construction

• TH845-895 Architectural engineering. Structural engineering of buildings
• TH1000-1725 Systems of building construction (Including fireproof construction, concrete construction)
• TH2025-3000 Details in building design and construction (Including walls, roofs)
• TH3301-3411 Maintenance and repair
• TH5011-5701 Construction by phase of the work (Building trades)
• TH6101-6887 Plumbing and pipefitting
• TH7005-7699 Heating and ventilation. Air conditioning
• TH7700-7975 Illumination. Lighting
• TH8001-8581 Decoration and decorative furnishings
• TH9025-9745 Protection of buildings

TJ - Mechanical engineering and machinery

• TJ170-179 Mechanics applied to machinery. Dynamics
• TJ181-210 Mechanical movements
• TJ227-240 Machine design and drawing
• TJ255-265 Heat engines
• TJ268-740 Steam engineering
• TJ751-805 Miscellaneous motors and engines (Including gas, gasoline, diesel engines)
• TJ807-830 Renewable energy sources
• TJ836-927 Hydraulic machinery
• TJ950-1030 Pneumatic machinery
• TJ1350-1418 Hoisting and conveying machinery
• TJ1425-1575 Lifting and pressing machinery
• TJ1501-1519 Sewing machines

TK - Electrical engineering. Electronics. Nuclear engineering

• TK301-399 Electric meters
• TK1001-1841 Production of electric energy or power. Powerplants. Central stations
• TK2000-2891 Dynamoelectric machinery and auxiliaries (Including generators, motors, transformers)
• TK3001-3521 Distribution or transmission of electric power
• TK4125-4399 Electric lighting
• TK5101-6720 Telecommunication (Including telegraphy, telephone, radio, radar, television)
• TK7800-8360 Electronics
• TK9001-9401 Nuclear engineering. Atomic power

TL - Motor vehicles. Aeronautics. Astronautics

• TL1-484 Motor vehicles. Cycles
• TL500-777 Aeronautics. Aeronautical engineering
• TL780-785.8 Rocket propulsion. Rockets
• TL787-4050 Astronautics. Space travel

TN - Mining engineering. Metallurgy

• TN263-271 Mineral deposits. Metallic ore deposits. Prospecting
• TN275-325 Practical mining operations. Safety measures
• TN400-580 Ore deposits and mining of particular metals
• TNN600-799 Metallurgy

TP - Chemical technology

• TP155-156 Chemical engineering
• TP200-248 Chemicals: Manufacture, use, etc.
• TP267.5-301 Explosives and pyrotechnics
• TP315-360 Fuel
• TP368-456 Food processing and manufacture
• TP500-660 Fermentation industries. Beverages. Alcohol
• TP751-762 Gas industry
• TP890-933 Textile bleaching, dyeing, printing, etc.

TR - Photography

• TR250-265 Cameras
• TR287-500 Photographic processing. Darkroom technique
• TR510-545 Color photography
• TR550-581 Studio and laboratory
• TR624-835 Applied photography (Including artistic, commercial, medical photography, photocopying processes)
  TR845-899 Cinematography. Motion pictures

TS - Manufactures

• TS155-194 Production management. Operations management
• TS200-770 Metal manufactures. Metalworking
• TS780-788 Stonework
• TS800-937 Wood technology. Lumber
• TS940-1047 Leather industries. Tanning
• TS1080-1268 Paper manufacture and trade
• TS1300-1865 Textile industries
• TS2120-2159 Cereals and grain. Milling industry
• TS2220-2283 Tobacco industry

TT - Handicrafts. Arts and crafts

• TT174-176 Articles for children
• TT180-200 Woodworking. Furniture making. Upholstery
• TT205-267 Metalworking
• TT300-382.8 Painting. Wood finishing
• TT490-695 Clothing manufacture. Dressmaking. Tailoring
• TT697-927 Home arts. Homecrafts (Including sewing, embroidery, decorative crafts)
• TT950-979 Hairdressing. Beauty culture. Barber's work
• TT980-999 Laundry work

TX - Home economics

• TX301-339 The house (Including arrangement, care, servants)
• TX341-641 Nutrition. Foods and food supply
• TX642-840 Cooking
• TX901-946.5 Hospitality industry. Hotels, clubs, restaurants, etc. Food service
• TX950-953 Taverns, barrooms, saloons
• TX955-985 Building operation and housekeeping