Evaluation of dynamic properties of site and Response of Motion Simulator Foundation P. Anbazhagan * , T.G. Sitharam + , G.L. Sivakumar Babu and More Ramulu Department of Civil Engineering, Indian Institute of Science, Bangalore- 560 012. * anbazhagan@civil.iisc.erent.in, + sitharam@civil.iisc.ernet.in Abstract Geotechnical parameters such as shear wave velocity and shear modulus are very important parameters in ground response analysis. The dynamic properties of foundation material below the three axes motion simulator are evaluated using the Block vibration test, Multichannel Analysis of Surface Waves (MASW) and a seismograph. This paper presents the measurements of dynamic properties using Block vibration test and MASW. Paper also present the response of foundation material due to local site condition using SHAKE2000 and vibration measurements for a passive source. Vibration characteristics of foundation material have been monitored by a seismograph with tri-axial sensors to measure the peak particle velocity in all the three directions from the passive sources such as generator, pump house and industrial Buildings which are located at about 70m to 200m from the proposed motion simulator. Keywords: Shear wave velocity, site effects, MASW, Shake and Isolation. 1 Introduction Dynamic soil properties are very important for dynamic analysis and seismic response of important structures and sensitive machineries. Three axes motion simulator allow simultaneous attitude simulation in three degrees of freedom. Seismic response of the foundation and earthquake resistant design plays on important role in functioning of the system. In this paper measurement of dynamic properties of foundation materials using block vibration tests and MASW for the design of foundation of the three axes motion simulator have been discussed. Evaluation of response of motion simulator foundation due to