Reference peak value of the ground acceleration of Bulgaria according to Eurocode

Standard

Annex

Layer

Seismic load | EN 1998-1 | BDS EN 1998-1

a_gR in m/s² - 95 years	0,07·g	0,07·g*	0,11·g	0,11·g*	0,15·g

a_gR in m/s² - 475 years	0,11·g	0,11·g*	0,15·g	0,15·g*	0,23·g	0,23·g*	0,32·g

a_gR in m/s² - 1000 years	0,13·g	0,13·g*	0,18·g	0,18·g*	0,26·g	0,26·g*	0,4·g	0,4·g*	>0,4·g

Source: BDS EN 1998-1/NA:2012-03 | http://www.gadm.org/download | http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp | Data Protection