, the vibration isolation system as a whole had a dominant frequency varying between 3 and 4 Hz agreeing with the design estimations. Furthermore, slight peaks were observed between 100 and 400 Hz frequency range in vibration measurements performed on the constructed inertial mass. The observed peaks might be attributed to background noise or surge frequencies (natural frequency) of vibration isolator. Measurements showed that the amplification values at natural frequencies were 1.5–2 times higher than the expected design values estimated for an average damping ratio of 3%. Manufacturing defects of the isolation system as well as slight installation errors might lead to variations in observed resonant frequency peaks. Choudhry [46] stated that damping of wire mesh was strongly dependent on the displacement and decreased with the continuous vibration. Thus, the underestimation of amplification at resonance might be due to the displacement amplitude.