Help Safeguard People and Property Against Fire and Related Hazards in Subterranean Spaces and Buildings.
NFPA 520, Standard on Subterranean Spaces, covers the particular fire and life safety factors in these special environments, including means of egress issues such as orientation and excessive travel distances, poor ventilation, communication difficulties, and nontraditional behavior of fire.
The standard allows for occupancies in new and existing subterranean space buildings, including public assembly, business, educational, detention and correctional, health care, board and care, residential, industrial, mercantile, and storage uses.
NFPA 520 is an essential resource for installers, contractors, designers, engineers, facility managers, first responders, and anyone involved with fire and life safety or emergency response in these special environments.
The standard regulates all developed subterranean spaces except tourist caverns, gas and oil storage reservoirs, utility installations such as pump stations, working mines, transportation and pedestrian tunnels, aboveground buildings with belowground stories, and underground structures specifically addressed in the building code.
