Analisis persebaran nilai brittlness, modulus young, modulus bulk,dan poisson's ratio menggunakan integrasi metode seismik refraksi dan MASW studi kasus gedung baru Fasilkom UI = Analysis distribution of brittlness index, modulus young, modulus bulk, and poisson's ratio using the integration of refraction seismic method and MASW case study of Fasilkom UI's new building.