5607.9.6 Blasting in congested areas.
FC § 5607.9.6
When blasting is conducted in a congested area or in close proximity to buildings, structures or infrastructure that may be subjected to blast-induced ground vibrations or air overpressure, or whose use and occupancy may otherwise be seriously affected by blasting operations, the blaster shall schedule the timing of each blast and take appropriate precautions in its loading, confinement and initiation, so as to minimize the effect of the blast upon surrounding uses and occupancies, as set forth in FC 5607.5.3, and to control the ground vibrations and air overpressure effects. Shoring or other means approved by the commissioner of buildings shall be used to reinforce buildings, retaining walls and other structures and infrastructure that are susceptible to damage from vibration and air overpressure effects, and weak rock shall be manually removed by gads, picks or crowbars, without the use of explosives. When blasting is unavoidable in the vicinity of such buildings, structures and infrastructure, only light face blasts with short lines of resistance and small charges shall be used.
