About the building disaster of a reinforced concrete beam caused as a result of failure to meet the structural requirements

The failure and collapse of edge beam were caused by the synergy of the following factors: the improper design of beams in the axes A and E, particularly with reference to shearing and torsion, the improper design of the column in the axes A and 1, the improper design of laps in the reinforcement, the performance of laps in the reinforcement which did not match the design, and the inaccurate embedment of the beam in concrete. And lower class of concrete should be regarded as the secondary cause.