expansion latérale

CONT: Ben C. Gerwick, Inc. has recently completed physical tests on three 1/2-scale continuous standard-weight reinforced concrete deep beams, for Mobil Oil and Metalock Industrier A/S, of Norway. The study was established to better determine the influence of headed stirrups on the performance of deep beams and to compare the performance of three different transverse shear reinforcing levels (1%, 1.5%, and 2%), with the performance predicted by the ACI and CSA standards. The use of headed stirrups offers a number of advantages over conventional bent stirrups, including: 1. More rigid restraint of the lateral expansion of concrete under high strains.