The ability to enter collapsed structures resulting from (1) construction disasters, (2) earthquakes, (3) fires, and (4) weather-related structural collapses may already be familiar to rescue workers and emergency responders. Rain and snow accumulations on roofs, hurricanes, tornadoes, landslides, and even avalanches are the usual causes of weather-related structural collapses. Today, emergency responders and rescuers may also have to enter a building that has collapsed after a terrorist assault. Additional risks from terrorist action could include follow-on attacks, secondary devices, and lingering chemical, biological, or radiological contamination.
જોત જોતામાં તો પત્તાના મહેલની જેમ ધરાશાયી થઈ ગયું બે માળનું મકાન, બેંગલુરુનો
જોત જોતામાં તો પત્તાના મહેલની જેમ ધરાશાયી થઈ ગયું બે માળનું મકાન, બેંગલુરુનો ચોંકાવનારો વીડિયો વાયરલ
Vehicle explosives, like the one used at the Murrah Federal Office Building in Oklahoma City, Oklahoma (April 19, 1995), and commercial aircraft colliding with the World Trade Towers in New York City (September 11, 2001) are examples of terrorist acts that have historically caused buildings to collapse. Rescuers and emergency responders who enter a collapsed structure to carry out their jobs should do so safely, regardless of the underlying cause of the structural breakdown.
General Details
A collapsed structure is what?
External walls are drawn into the collapsing structure when internal load-bearing structural components fail, causing a building to collapse into itself. This situation could result in a dense debris field with a compact footprint and could be brought on by construction, an earthquake, or a fire. On the other hand, the building might collapse outward, creating a less dense and more dispersed debris field, if the structural failure was brought on by an explosion or by natural forces like weather.
Who goes inside a building that has collapsed?
Rescue personnel searching through the rubble
Rescuers and emergency personnel may need to enter the collapsed structure once a structure fails catastrophically for any reason. Firefighters, police officers, emergency medical technicians, construction workers, and government officials are examples of emergency responders. Helping survivors, putting out fires, turning off utilities, evaluating structural instability, shoring up safe routes into the building, and evaluating additional risks, like airborne pollutants, may fall within the purview of emergency responders. Urban Search and Rescue Teams and other rescue personnel concentrate on locating survivors before extracting victims from collapsed buildings. The collapsed structure will also be treated as a crime scene by numerous terrorism investigators who will be there.
What hazards may be encountered when entering a collapsed structure?
The following hazards should be considered to protect rescue workers and emergency responders when preparing to enter a collapsed structure:
Rescue workers and emergency responders
Water system breaks that may flood basement areas
Exposure to pathogens from sanitary sewer system breaks
Exposed and energized electrical wiring
Exposure to airborne smoke and dust (asbestos, silica, etc.)
Exposure to bloodborne pathogens
Exposure to hazardous materials (ammonia, battery acid, leaking fuel, etc.)
Natural gas leaks creating a flammable and toxic environment
Structural instability
Insufficient oxygen
Confined spaces
Slip, trip or fall hazards from holes, protruding rebar, etc.
Being struck by a falling object
Fire
Proximity to heavy machinery such as cranes
Sharp objects such as glass and debris
Secondary explosive devices left by terrorists
Secondary collapse from aftershock, vibration and explosions
Residual chemical, biological or radiological contamination
Unfamiliar surroundings
Adverse weather conditions
Noise from equipment (generators/heavy machines)
