Blasting situation | Maximum PPV (mm/s) | |
Heavily reinforced concrete structures | 120 | |
Property owned by the concern performing blasting operations where minor plaster cracks are acceptable | 84 | |
Strong masonry walls not affected by public concern | 50 | |
Commercial property in reasonable repair where public concern is not an important consideration | 25 | |
Private property if public concern is to be taken into account or if blasting is conducted on a regular and frequent basis. | 10 | |