Traditionally, buildings constructed with concrete floors have performed well in concern with vibration serviceability. This is due to heavy weight with high mass stiffness of floors. Modern building designs are concentrated on light weight floor system, efficient structures with high strength materials. Such system of designing compromises strength as well as span length. This light weight floor and decreased mass with long and slender spans along with minimum partitions leads vibration problems in buildings. This phenomenon is often visualized in structures subjected to dynamic loads. Dynamic loads are generally generated by human activities such as aerobics, dancing, sporting events and free jumps.  

Keywords: Vibration, dynamic loads, acceleration, frequency, displacement.