Estimates Building 71 Engineering 10 Air conditioning 6 Data processing 5 Heating 5 Buildings 4 Civil engineering 4 Construction contracts 4 Costs 4 Plumbing 4 Specifications 4 Ventilation 4 Computer programs 3 Construction industry 3 Design and construction 3 Accounting 2 Demography 2 Engineering economy 2 Handbooks, manuals, etc 2 Mechanical engineering 2 Methodology 2 Periodicals 2 Planning 2 Population forecasting 2 Statistical methods 2 Architecture 1 Automation 1 Bibliography 1 Building materials 1