Which of the following statements best describes seismic retrofitting?
1
Seismic retrofitting is the process of demolishing old buildings that do not meet earthquake safety standards.
2
Seismic retrofitting involves providing earthquake resistance to an old building, allowing it to withstand greater earthquake forces than initially designed for.
3
Seismic retrofitting is a method of building new earthquake-resistant structures from scratch.
4
Seismic retrofitting involves temporary repairs to buildings damaged by earthquakes.