Hefty spending in the U.S. on transportation, and the growing infrastructure demands of emerging economies are set to make civil engineering the fastest-growing sector of the construction industry for the next four years. The annual growth rate will top 6%, according to a study by Standard & Poor's DRI consultancy and F.W. Dodge, a provider of construction market data. Civil engineering accounts for 28% of the global construction market. Nonresidential construction, including factories, will be boosted this year by resumed growth of European economies and the need for more office and manufacturing floor space in the developing world regions, according to the report. Also noted: