Seismic retrofitting is
1
It is the modification of existing structures to make them more resistance to seismic activity, ground motion, or soil failure due to earthquake.
2
It is the process of improving a broken, damaged, or outdated structure due to seismic activity, ground motion.
3
It is the process of making the occupation of building more liveable and safe during earthquake.
4
It is the act or process of cleaning, decorating, and providing a building with new equipment or facilities.