TA Engineering (General). Civil engineering (General) 89 Technology: general issues 49 History of engineering and technology 35 Reinforced concrete 23 History of engineering & technology 18 Concretes 15 Compressive strength 10 Concrete buildings 9 Structural design 9 Earthquakes 8 Materials science 8 Research & information: general 8 Structural engineering 8 Civil engineering, surveying & building 7 Concrete construction 7 Concrete beams and girders 6 Sustainable development 6 Tensile strength 6 Architecture 5 Building construction & materials 5 Construction industry 5 cyclic loading 5 Concrete 4 Conservation of buildings and building materials 4 Cracks 4 Reinforcement 4 Seismic design 4 Seismology 4 TH Building construction 4 Architectural structure and design 3