LIBRARY OF CONGRESS CLASSIFICATION OUTLINE

CLASS T - TECHNOLOGY

Subclass T

T1-995	Technology (General)

T10.5-11.9	Communication of technical information

T11.95-12.5	Industrial directories

T55-55.3	Industrial safety. Industrial accident prevention

T55.4-60.8	Industrial engineering. Management engineering

T57-57.97	Applied mathematics. Quantitative methods

T57.6-57.97	Operations research. Systems analysis

T58.4	Managerial control systems

T58.5-58.64	Information technology

T58.6-58.62	Management information systems

T58.7-58.8	Production capacity. Manufacturing capacity

T59-59.2	Standardization

T59.5	Automation

T59.7-59.77	Human engineering in industry. Man-machine systems

T60-60.8	Work measurement. Methods engineering

T61-173	Technical education. Technical schools

T173.2-174.5	Technological change

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

Subclass TA

TA1-2040	Engineering (General). Civil engineering (General)

TA164	Bioengineering

TA165	Engineering instruments, meters, etc. Industrial instrumentation

TA166-167	Human engineering

TA168	Systems engineering

TA170-171	Environmental engineering

TA174	Engineering design

TA177.4-185	Engineering economy

TA190-194	Management of engineering works

TA197-198	Engineering meteorology

TA213-215	Engineering machinery, tools, and implements

TA329-348	Engineering mathematics. Engineering analysis

TA349-359	Mechanics of engineering. Applied mechanics

TA365-367	Acoustics in engineering. Acoustical engineering

TA401-492	Materials of engineering and construction. Mechanics of materials

TA495	Disasters and engineering

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. Tunnels

TA1001-1280	Transportation engineering

TA1501-1820	Applied optics. Photonics

TA2001-2040	Plasma engineering. Applied plasma dynamics

Subclass TC

TC1-978	Hydraulic engineering

TC160-181	Technical hydraulics

TC183-201	General preliminary operations. Dredging. Submarine building

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

Subclass TD

TD1-1066	Environmental technology. Sanitary engineering

TD159-168	Municipal engineering

TD169-171.8	Environmental protection

TD172-193.5	Environmental pollution

TD194-195	Environmental effects of industries and plants

TD201-500	Water supply for domestic and industrial purposes

TD419-428	Water pollution

TD429.5-480.7	Water purification. Water treatment and conditioning. Saline

water conversion

TD481-493	Water distribution systems

TD511-780	Sewage collection and disposal systems. Sewerage

TD783-812.5	Municipal refuse. Solid wastes

TD813-870	Street cleaning. Litter and its removal

TD878-894	Special types of environment

Including soil pollution, air pollution, noise pollution

TD895-899	Industrial and factory sanitation

TD896-899	Industrial and factory wastes

TD920-934	Rural and farm sanitary engineering

TD940-949	Low temperature sanitary engineering

TD1020-1066	Hazardous substances and their disposal

Subclass TE

TE1-450	Highway engineering. Roads and pavements

TE175-176.5	Highway design. Interchanges and intersections

TE177-178.8	Roadside development. Landscaping

TE200-205	Materials for roadmaking

TE206-209.5	Location engineering

TE210-228.3	Construction details

Including foundations, maintenance, equipment

TE250-278.8	Pavements and paved roads

TE279	Streets

TE279.5-298	Pedestrian facilities

TE280-295	Sidewalks. Footpaths. Flagging

TE298	Curbs. Curbstones

Subclass TF

TF1-1620	Railroad engineering and operation

TF200-320	Railway construction

TF340-499	Railway equipment and supplies

TF501-668	Railway operation and management

TF670-851	Local and light railways

TF840-851	Elevated railways and subways

TF855-1127	Electric railways

TF1300-1620	High speed ground transporation

Subclass TG

TG1-470	Bridge engineering

Subclass TH

TH1-9745	Building construction

TH845-895	Architectural engineering. Structural engineering of buildings

TH900-915	Construction equipment in building

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

TH4021-4977	Buildings: Construction with reference to use

Including public buildings, dwellings

TH5011-5701	Construction by phase of the work (Building trades)

TH6014-6081	Environmental engineering of buildings. Sanitary engineering of

buildings

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

Including protection from dampness, fire, burglary

Subclass TJ

TJ1-1570	Mechanical engineering and machinery

TJ163.13-163.25	Power resources

TJ163.26-163.5	Energy conservation

TJ170-179	Mechanics applied to machinery. Dynamics

TJ181-210	Mechanical movements

TJ210.2-211.47	Mechanical devices and figures. Automata. Ingenious mechanisms.

Robots (General)

TJ212-225	Control engineering systems. Automatic machinery (General)

TJ227-240	Machine design and drawing

TJ241-254.7	Machine construction (General)

TJ255-265	Heat engines

TJ266-267.5	Turbines. Turbomachines (General)

TJ268-740	Steam engineering

TJ603-695	Locomotives

TJ751-805	Miscellaneous motors and engines

Including gas, gasoline, diesel engines

TJ807-830	Renewable energy sources

TJ836-927	Hydraulic machinery

TJ940-940.5	Vacuum technology

TJ950-1030	Pneumatic machinery

TJ1040-1119	Machinery exclusive of prime movers

TJ1125-1345	Machine shops and machine shop practice

TJ1350-1418	Hoisting and conveying machinery

TJ1425-1475	Lifting and pressing machinery

TJ1480-1496	Agricultural machinery. Farm machinery

TJ1501-1519	Sewing machines

Subclass TK

TK1-9971	Electrical engineering. Electronics. Nuclear engineering

TK301-399	Electric meters

TK452-454.4	Electric apparatus and materials. Electric circuits. Electric

networks

TK1001-1841	Production of electric energy or power. Powerplants. Central

stations

TK2000-2891	Dynamoelectric machinery and auxiliaries

Including generators, motors, transformers

TK2896-2985	Production of electricity by direct energy conversion

TK3001-3521	Distribution or transmission of electric power

TK4001-4102	Applications of electric power

TK4125-4399	Electric lighting

TK4601-4661	Electric heating

TK5101-6720	Telecommunication

Including telegraphy, telephone, radio, radar, television

TK7800-8360	Electronics

TK7885-7895	Computer engineering. Computer hardware

TK8300-8360	Photoelectronic devices (General)

TK9001-9401	Nuclear engineering. Atomic power

TK9900-9971	Electricity for amateurs. Amateur constructors' manuals

Subclass TL

TL1-4050	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

Subclass TN

TN1-997	Mining engineering. Metallurgy

TN263-271	Mineral deposits. Metallic ore deposits. Prospecting

TN275-325	Practical mining operations. Safety measures

TN331-347	Mine transportation, haulage and hoisting. Mining machinery

TN400-580	Ore deposits and mining of particular metals

TN600-799	Metallurgy

TN799.5-948	Nonmetallic minerals

TN950-997	Building and ornamental stones

Subclass TP

TP1-1185	Chemical technology

TP155-156	Chemical engineering

TP200-248	Chemicals: Manufacture, use, etc.

TP248.13-248.65	Biotechnology

TP250-261	Industrial electrochemistry

TP267.5-301	Explosives and pyrotechnics

TP315-360	Fuel

TP368-456	Food processing and manufacture

TP480-498	Low temperature engineering. Cryogenic engineering. Refrigeration

TP500-660	Fermentation industries. Beverages. Alcohol

TP670-699	Oils, fats, and waxes

TP690-692.5	Petroleum refining. Petroleum products

TP700-746	Illuminating industries (Nonelectric)

TP751-762	Gas industry

TP785-869	Clay industries. Ceramics. Glass

TP875-888	Cement industries

TP890-933	Textile bleaching, dyeing, printing, etc.

TP934-945	Paints, pigments, varnishes, etc.

TP1080-1185	Polymers and polymer manufacture

Subclass TR

TR1-1050	Photography

TR250-265	Cameras

TR287-500	Photographic processing. Darkroom technique

TR504-508	Transparencies. Diapositives

TR510-545	Color photography

TR550-581	Studio and laboratory

TR590-620	Lighting

TR624-835	Applied photography

Including artistic, commercial, medical photography,

photocopying processes

TR845-899	Cinematography. Motion pictures

TR925-1050	Photomechanical processes

Subclass TS

TS1-2301	Manufactures

TS155-194	Production management. Operations management

TS195-198.8	Packaging

TS200-770	Metal manufactures. Metalworking

TS780-788	Stonework

TS800-937	Wood technology. Lumber

TS840-915	Wood products. Furniture

TS920-937	Chemical processing of wood

TS940-1047	Leather industries. Tanning

TS1060-1070	Furs

TS1080-1268	Paper manufacture and trade

TS1300-1865	Textile industries

TS1870-1935	Rubber industry

TS1950-1982	Animal products

TS2120-2159	Cereals and grain. Milling industry

TS2220-2283	Tobacco industry

TS2284-2288	Animal feeds and feed mills. Pet food industry

Subclass TT

TT1-999	Handicrafts. Arts and crafts

TT161-170.7	Manual training. School shops

TT174-176	Articles for children

TT180-200	Woodworking. Furniture making. Upholstering

TT201-203	Lathework. Turning

TT205-267	Metalworking

TT300-382.8	Painting. Wood finishing

TT387-410	Soft home furnishings

TT490-695	Clothing manufacture. Dressmaking. Tailoring

TT697-927	Home arts. Homecrafts

Including sewing, embroidery, decorative crafts

TT950-979	Hairdressing. Beauty culture. Barbers' work

TT980-999	Laundry work

Subclass TX

TX1-1110	Home economics

TX301-339	The house

Including arrangement, care, servants

TX341-641	Nutrition. Foods and food supply

TX642-840	Cooking

TX851-885	Dining-room service

TX901-946.5	Hospitality industry. Hotels, clubs, restaurants, etc. Food service

TX950-953	Taverns, barrooms, saloons

TX955-985	Building operation and housekeeping

TX1100-1105	Mobile home living

TX1110	Recreational vehicle living