Study Characteristics of a Multipurpose Reactor Building G.A. Siwabessy using Floor Spectral RatioAgung Satriyo, Wiwit Suryanto, Titi Anggono, M. Luthfi Al Kamali and Hanna Salsabila YufiE3S Web Conf., 468 (2023) 09003DOI: https://doi.org/10.1051/e3sconf/202346809003