steel structures 42 building constructions 26 concrete constructions 22 geodesy 22 bridges 21 civil engineering 21 iron-concrete constructions 20 more ... teaching aids 18 wooden constructions 16 buildings (construction) 13 structural mechanics 13 management 11 railway structures 11 ground structures 10 statics of building constructions 10 building equipments 10 water structures 10 concretes 9 economy 9 engineering surveying 8 loading of constructions 8 photogrammetry 7 building designing 7 technical standards 7 halls 6 material engineering 6 materials 6 sun exposure 6 fire protection 6 elasticity 6 less ...