Library of Congress Classification:Class T -- Technology

Class T: Technology is a classification used by the Library of Congress Classification system. This page outlines the subclasses of Class T.

T - Technology (general)

 * 10.5-11.9...................................Communication of technical information
 * 11.95-12.5.................................Industrial directories
 * 55-55.3............................................Industrial safety. 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 Fairs.

TA - 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 mechanics. Soil mechanics. Underground construction
 * 715-787...................................Earthwork. Foundations
 * 800-820...................................Tunneling. Tunnels
 * 1001-1280...............................Transportation engineering
 * 1501-1820...............................Applied optics. Photonics
 * 2001-2040...............................Plasma engineering. Applied plasma dynamics

TC - Hydraulic engineering. 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 - Environmental technology. Sanitary engineering

 * 159-168...................................Municipal engineering
 * 169-171.8................................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. Sewerage
 * 783-812.5................................Municipal refuse. Solid wastes
 * 813-870...................................Street cleaning. Litter and its removal
 * 878-894...................................Special types of environment. Including soil pollution, air pollution, noise pollution
 * 895-899...................................Industrial and factory sanitation
 * 896-899.........................................Industrial and factory wastes
 * 920-934...................................Rural and farm sanitary engineering
 * 940-949...................................Low temperature sanitary engineering
 * 1020-1066...............................Hazardous substances and their disposal

TE - Highway engineering. Roads and pavements

 * 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 - Railroad engineering and operation

 * 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 - Bridge engineering

 * 1-470................................Bridge engineering

TH - Building construction

 * 845-895...................................Architectural engineering. Structural engineering of buildings
 * 900-915...................................Construction equipment in building
 * 1000-1725...............................Systems of building construction. Including fireproof construction, concrete 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 the work (Building trades)
 * 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 - Mechanical engineering and machinery

 * 163.13-163.25..........................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 shop practice
 * 1350-1418................................Hoisting and conveying machinery
 * 1425-1475................................Lifting and pressing machinery
 * 1480-1496................................Agricultural machinery. Farm machinery
 * 1501-1519................................Sewing machines

TK - 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, motors, transformers
 * 2896-2985...............................Production of electricity by direct energy 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 - Motor vehicles. Aeronautics. Astronautics

 * 1-484.......................................Motor vehicles. Cycles
 * 500-777...................................Aeronautics. Aeronautical engineering
 * 780-785.8................................Rocket propulsion. Rockets
 * 787-4050.................................Astronautics. Space travel

TN - Mining engineering. Metallurgy

 * 263-271...................................Mineral deposits. Metallic ore deposits. Prospecting
 * 275-325...................................Practical mining operations. Safety measures
 * 331-347...................................Mine transportation, haulage and hoisting. Mining machinery
 * 400-580...................................Ore deposits and mining of particular metals
 * 600-799...................................Metallurgy
 * 799.5-948................................Nonmetallic minerals
 * 950-997...................................Building and ornamental stones

TP - Chemical technology

 * 155-156...................................Chemical engineering
 * 200-248...................................Chemicals: Manufacture, use, etc.
 * 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. Cryogenic engineering. Refrigeration
 * 500-660...................................Fermentation industries. Beverages. Alcohol
 * 670-699...................................Oils, fats, and waxes
 * 690-692.5......................................Petroleum refining. Petroleum products
 * 700-746...................................Illuminating industries (Nonelectric)
 * 751-762...................................Gas industry
 * 785-869...................................Clay industries. Ceramics. Glass
 * 875-888...................................Cement industries
 * 890-933...................................Textile bleaching, dyeing, printing, etc.
 * 934-945...................................Paints, pigments, varnishes, etc.
 * 1080-1185...............................Polymers and polymer manufacture

TR - Photography

 * 250-265...................................Cameras
 * 287-500...................................Photographic processing. Darkroom technique
 * 504-508...................................Transparencies. Diapositives
 * 510-545...................................Color photography
 * 550-581...................................Studio and laboratory
 * 590-620...................................Lighting
 * 624-835...................................Applied photography. Including artistic, commercial, medical photography, photocopying processes
 * 845-899...................................Cinematography. Motion pictures
 * 925-1050.................................Photomechanical processes

TS - Manufactures

 * 155-194...................................Production management. Operations 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 wood
 * 940-1047..................................Leather industries. Tanning
 * 1060-1070................................Furs
 * 1080-1268................................Paper manufacture and trade
 * 1300-1865................................Textile industries
 * 1870-1935................................Rubber industry
 * 1950-1982................................Animal products
 * 2120-2159................................Cereals and grain. Milling industry
 * 2220-2283................................Tobacco industry
 * 2284-2288................................Animal feeds and feed mills. Pet food industry

TT - Handicrafts. Arts and crafts

 * 161-170.7................................Manual training. School shops
 * 174-176...................................Articles for children
 * 180-200...................................Woodworking. Furniture making. Upholstering
 * 201-203...................................Lathework. Turning
 * 205-267...................................Metalworking
 * 300-382.8................................Painting. Wood finishing
 * 387-410...................................Soft home furnishings
 * 490-695...................................Clothing manufacture. Dressmaking. Tailoring
 * 697-927...................................Home arts. Homecrafts. Including sewing, embroidery, decorative crafts
 * 950-979...................................Hairdressing. Beauty culture. Barbers' work
 * 980-999...................................Laundry work

TX - Home economics

 * 301-339...................................The house. Including arrangement, care, servants
 * 341-641...................................Nutrition. Foods and food supply
 * 642-840...................................Cooking
 * 851-885...................................Dining-room service
 * 901-946.5................................Hospitality industry. Hotels, clubs, restaurants, etc. Food service
 * 950-953...................................Taverns, barrooms, saloons
 * 955-985...................................Building operation and housekeeping
 * 1100-1105...............................Mobile home living
 * 1110........................................Recreational vehicle living