To meet an accelerated construction schedule for a medical center, an innovative formwork system was used. The system comprises slab tables, supported at the column-slab interface, that automatically compensate for deflections occurring during concrete placement. After the floor concrete has reached sufficient strength to carry self-weight and construction loads, the tables are lowered and manually rolled to outrigger platforms outside the building, allowing simple and fast cycling

Self-consolidating concrete (SCC) mixtures were tested and wall and column elements were instrumented to determine formwork pressures during placement. The findings confirm that test methods for evaluating the structural build-up of SCC can be used in conjunction with recently developed prediction models to determine the maximum formwork pressure exerted by SCC. An additional model allows prediction of the rate of pressure drop with time

Before the ACI Spring 2011 Convention in Tampa, FL, the ACI Technical Activities Committee selected 27 Chairs for ACI technical committees. These actions became effective after the recent convention