In the 1950s, paving 2,000 lineal feet of 24-foot-wide concrete pavement or placing and finishing 5,000 square feet of floor was considered a good day's work. And completing a 3,000-cubic-yard mat pour in less than a day was unheard of. But today's contractors routinely complete a mile or more of concrete pavement, 50,000 square feet of floor, or a massive mat pour in a day. Several equipment developments have made these feats possible: internal vibrators, concrete pumps, slipform pavers, laser-guided screeds, ride-on power trowels, and early-entry saws.
