technical standards 537 thermal insulation 42 standards 34 protection of buildings 32 concrete constructions 31 concretes 30 electrotechnics 28 more ... fire protection 27 provisions 25 civil engineering 25 safety of work 22 programmable logic circuits 21 programming 21 automation 19 normalization 19 building designing 19 calculations 19 material testing 18 steel structures 16 computer security 16 construction materials 16 ventilation and air-conditioning 16 iron-concrete constructions 16 insulation materials 15 simulation and modelling 15 building constructions 15 electric wirings 13 energy 13 production 13 buildings (architecture) 12 less ...