Technology: general issues 31 TA Engineering (General). Civil engineering (General) 30 History of engineering and technology 24 History of engineering & technology 14 Structural engineering 7 Reinforced concrete 6 Materials science 5 Research & information: general 5 Concretes 4 Compressive strength 3 Concrete beams and girders 3 Concrete buildings 3 Concrete construction 3 Conservation of buildings and building materials 3 Bearing capacity 2 Bearing strengths 2 Building construction & materials 2 Civil engineering, surveying & building 2 Concrete bearings 2 Concrete testing 2 Confinement effects 2 Different heights 2 Industrial chemistry and chemical engineering 2 Medicine and Nursing 2 Partial replacement 2 Plates (structural components) 2 Seismic design 2 Shrinkage 2 Steel fibers 2 Structural design 2