The U.S. Census Bureau projects the value of construction put in place in 1999 will slightly exceed $700 billion. What share of that number does concrete work command? And what is the size of the different market segments? To get answers, the authors accumulated cement and concrete statistical data from several sources. Then with help from the Portland Cement Association and R.S. Means, a company specializing in estimating and analyzing construction costs, they developed a methodology for defining the concrete market.