Drawings Building 68 Details 66 Blueprints 60 Machinery 33 Machine design 17 Standards 16 House construction 15 Equipment and supplies 12 Structural drawing 11 Architectural drawing 10 Dwellings 10 Welding 10 Buildings 9 Computer-aided design 8 Air conditioning 7 Ventilation 7 Designs and plans 6 Heating 6 Chemical plants 4 Engineering drawings 4 Interactive multimedia 4 Design and construction 3 Mechanical drawing 3 Piping 3 Planning 3 Standards, Engineering 3 Architecture 2 Automobile 2 Building sites 2