Figure 10

Frequency-domain acceleration at a depth of 25Â m under the influence of EPS isolation walls of different thicknesses, with peak accelerations before and after applying isolation measures indicated. (a) Isolation wall thickness of 1Â m. (b) Isolation wall thickness of 1.5Â m. (c) Isolation wall thickness of 2Â m. (d) Isolation wall thickness of 2Â m.