The National Building Code of Canada Is Especially Concerned

The National Building Code of Canada is especially concerned:

A) about areas where overlap might occur between the natural frequencies of the seismic waves,local soil conditions,and buildings.
B) about the seismic waves propagation at 1 km below ground surface.
C) about the unreinforced masonry buildings.
D) about the new buildings in Canadian seismic risk zones.
E) about areas where overlap might occur between the natural frequencies of the seismic waves,local soil conditions,and buildings,and about the unreinforced masonry buildings.