Post tensioning Slab Load Testing

Post Tensioned Slab Load Testing

A building under construction experiences cracks on its posttensioned slab, structural capacity was doubted for a designed live load of 400 kg/m2 and a super imposed dead load of 250 kg/m2. Thus, an agreement for a load test was made and conducted to determine floor actual capacity. Dial gauges and Displacement transducers were installed to monitor floor deflections. Dynamic data logging system was also brought to monitor real-time elastic floor deformation. Any signs of plastic deformation shown by dynamic data logging system or exceedance of floor deflection compared to allowable maximum deflection of the given floor lead to the termination of loading process. The results show that, the floor is sufficiently strong to the given design loads, its deflection lie within the limit provided by ACI recommendation.