This thesis describes the effects of coefficient of variation (COV) of joist modulus
of elasticity (MOE), floor mass and stiffness, imposed load, and boundary conditions
on the floor vibrational performance. Three main parameters used to describe the
vibration are resonant frequency, damping ratio, and root mean square (RMS)
acceleration. The results showed that COV of joist MOE affected the fundamental
frequency, and had no significant effect on damping ratio and RMS acceleration. The
floor mass and stiffness affected all the three parameters to different degrees. Imposed
load affected most of the vibrational parameters. The boundary conditions investigated
affect the mode 2 resonant frequency, but have no significant effect on the damping ratio
and RMS acceleration. In addition, the load sharing capacity was evaluated in terms of
the percentage of load carried by each joist within a floor.
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