Progressive collapse of a flat slab building

Resumo

The possibility of progressive collapse in a flat slab was analyzed using the reinforced concrete structural
design softwares Eberick and TQS. After the failure of a slab-column connection, the punching capacity of the
slab was verified according to NBR 6118:2014, EUROCODE 2:2004 and ACI 318:2011 and the remaining
capacity of the failed floor was assessed by the Yield Line Theory. Integrity reinforcement was also sized
according to NBR 6118:2014, CEB:2010 and GSA:2013. It is concluded that there is a possibility of propagation
of the failure after an initial failure by punching, and the presence of integrity reinforcement can help preventing
the propagation of a localized failure.