T

1

-

995

Technology (General)

54

-

55

.3

Industrial safety

55

.4

-

60

.8

Industrial engineering

Including operations research, systems analysis, management information systems, production efficiency, human engineering in industry, work measurement, methods engineering

201

-

342

Patents. Trademarks

351

-

385

Mechanical drawing. Engineering graphics

391

-

995

Exhibitions. World's fairs

TA

1

-

2040

Engineering (General). Civil engineering (General)

166

-

167

Human engineering

168

Systems engineering

177

.4

-

185

Engineering economy

349

-

359

Mechanics of engineering. Applied mechanics

401

-

492

Materials of engineering and construction

Including strength of materials, testing and properties of materials

501

-

625

Surveying

630

-

695

Structural engineering (General)

705

-

710

.5

Engineering geology. Rock mechanics. Soil mechanics

715

-

787

Earthwork. Foundations

800

-

820

Tunneling. Tunnels

1001

-

1280

Transportation engineering (General)

1501

-

1820

Applied optics. Lasers

Including applied holography, optical data processing

2001

-

2040

Plasma engineering. Applied plasma dynamics

TC

1

-

1665

Hydraulic engineering

Including harbors and coast protective works, water-supply engineering, dams, canals, irrigation projects, drainage, ocean engineering

TD

1

-

949

Environmental technology. Sanitary engineering

159

-

167

Municipal engineering

169

-

171

.5

Environmental protection

172

-

196

Environmental pollution

201

-

500

Water supply for domestic and industrial purposes

Including water quality and pollution, treatment, saline water conversion, distribution systems

511

-

780

Sewage collection and disposal systems. Sewerage

785

-

812

.5

Municipal refuse. Solid wastes

813

-

870

Street cleaning. Litter and its removal

878

-

894

Special types of pollution

Including soil, air, noise pollution

895

-

899

Industrial sanitation. Industrial wastes

920

-

931

Rural and farm sanitary engineering

TE

1

-

450

Highway engineering. Roads and pavements

TF

1

-

1620

Railroad engineering and operation

Including street railways and subways

TG

1

-

470

Bridge engineering

TH

1

-

9745

Building construction

845

-

895

Architectural engineering. Structural engineering of buildings

1000

-

1727

Systems of building construction

Including fireproof, wood, masonry, concrete and steel construction

2031

-

3000

Details

Including foundations, walls, chimneys, roofs, floors

4021

-

4977

Buildings: Construction with reference to use

Including public buildings, factories, dwellings, farm buildings

5011

-

5701

Construction by phase of work (Building trades)

Including masonry, carpentry, metalworking

6014

-

7975

Environmental engineering

Including plumbing, heating, ventilation, lighting

9025

-

9745

Protection of buildings

Including protection from dampness, fire prevention and extinction, protection from burglary

TJ

1

-

1570

Mechanical engineering and machinery

212

-

225

Control engineering

268

-

740

Steam engineering

Including boilers, engines, locomotives

1125

-

1345

Machine shops and machine shop practice

Including machine and hand tools

1480

-

1496

Agricultural machinery

TK

1

-

9971

Electrical engineering. Electronics. Nuclear engineering

1001

-

1841

Production of electric energy. Powerplants

2000

-

2891

Dynamoelectric machinery

Including generators, motors, transformers

3001

-

3521

Distribution or transmission of electric power. The electric power circuit

4125

-

4399

Electric lighting

5101

-

6720

Telecommunication

7800

-

8360

Electronics

7885

-

7895

Computer engineering

9001

-

9401

Nuclear engineering. Atomic power

9900

-

9971

Electricity for amateurs

TL

1

-

4050

Motor vehicles. Aeronautics. Astronautics

1

-

390

Motor vehicles

500

-

778

Aeronautics

780

-

785

.8

Rockets

787

-

4050

Astronautics

TN

1

-

997

Mining engineering. Metallurgy

Including the mineral industries

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. Beverages. Alcohol

690

-

692

.4

Petroleum refining and products

751

-

762

Gas industry

785

-

888

Clay industries. Ceramics. Glass. Cement industries

890

-

933

Textile dyeing and printing

934

-

944

Paints, pigments, varnishes, etc.

1080

-

1185

Polymers, plastics and their manufacture

TR

1

-

1050

Photography

TS

1

-

2301

Manufactures

155

-

194

Production management

Including quality control, production control, inventory control, product engineering, process engineering, plant engineering

195

-

198

.8

Packaging

200

-

770

Metal manufactures. Metalworking

Including forging, casting, stamping, instrument making, firearms, clocks, metal finishing, jewelry

800

-

937

Wood technology

940

-

1070

Leather industries. Tanning

1080

-

1268

Paper manufacture. Woodpulp industry

1300

-

1865

Textile industries

1870

-

1935

Rubber industry

1950

-

1982

Animal products

2120

-

2159

Cereals and flour. Milling industry

2220

-

2283

Tabacco industry

TT

1

-

999

Handicrafts. Arts and crafts

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

-

339

The house

Including arrangement, care, pests, finance, servants

341

-

641

Nutrition. Foods and food supply

643

-

840

Cookery

901

-

953

Hotels, clubs, restaurants, etc. Food service

955

-

985

Building operation and maintenance

1100

-

1107

.4

Mobile home living