eng Science and Education Publishing American Journal of Civil Engineering and Architecture 2328-3998 2015-09-07 3 5 158 164 10.12691/ajcea-3-5-2 AJCEA2015352 article Lalu Makrup lalu_makruf@yahoo.com 1 Masyhur Irsyam 2 I Wayan Sengara 2 Hendriyawan 3 Department of Civil Engineering, Islamic University of Indonesia, Yogyakarta Department of Civil Engineering, Institute of Technology Bandung Department of Ocean Engineering, Institute of Technology Bandung Probabilistic seismic hazard analysis is a method of assessing seismic threat on a region in the earth surface. Total probability theorem was utilized here has solved on earthquake source domain and employed it in seismic hazard analysis. Solution of the theorem is performed in a computer program and has been used to develop the Hazard Map and the Uniform Hazard Spectrum (UHS). The map is peak ground acceleration (PGA) of Sumatra Indonesia with hazard level 10% probability of exceedance in 50 years and the UHS is from a site in Surabaya Indonesia with hazard level 10% probability of exceedance in 50 years. The two result of the program are verified by the two previous study results. The result of the program is very similar to two other studies. http://pubs.sciepub.com/ajcea/3/5/2/ajcea-3-5-2.pdf development probability seismic hazard seismic source map