Standards Quality control 214 Testing 168 Design and construction 118 Safety measures 110 Accounting 93 Buildings 93 Building 83 Mobile communication systems 75 Wireless communication systems 75 Electric apparatus and appliances 68 Structural design 63 Quality assurance 59 Education 58 Aggregates (Building materials) 56 Computer networks 56 Wireless LANs 53 Computer network protocols 52 ISO 9000 Series Standards 50 Total quality management 50 Electric wiring 49 Financial statements 49 Management 49 Concrete 47 Electric cables 45 Evaluation 45 Steel, Structural 45 Pipe fittings 44 Safety regulations 44 Timber 41