Concrete pavers have been a growing force in the masonry industry for the past several years. This article covers two developments in pavers. LARGEST PAVER PROJECT DEBUTS IN SAN ANTONIO More than 4.5 million concrete pavers were installed in the historical downtown district of San Antonio, Texas, making it the largest concrete paver installation in the United States. Guided by San Antonio's history (streets were first paved with wooden block pavers), city planners specified that the pavers be made in a rectangular shape. Installation began by demolishing existing streets. The workers placed and compacted an 8-inch asphaltic concrete base to 5 inches below finished grade. Dry, coarse bedding sand was then screeded to a 1-inch depth. CAD SPEEDS INTRICATE CONCRETE PAVER DESIGN Landscape architects have been using computer-aided design (CAD) since the early 1980s to design large-scale, multi-colored paver installations. Paver patterns that might have taken days to produce by hand can now be drafted in a few hours and with a high degree of accuracy. In addition to the design, all details of the specs, cost accounting, bid, materials, paver inventory, and delivery schedule can be stored in CAD and retrieved quickly.