The International Information Center for Structural Engineers

MIT students have found a way to produce plastic-reinforced concrete that is up to 15% stronger than conventional concrete, by adding irradiated bits of plastic water bottles

A rectangular column (400mmX400mm) is constructed of concrete and four steel reinforcing rebars. An axial force of 1000KN is subjected on the column. What is the diameter of the steel bars if the ¼ of the load is transferred to the steel bars and ¾ is transferred to the concrete? ( EST=200GPa, Ec=25GPa)