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10 Cards in this Set
- Front
- Back
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Signs of building collapse x9 |
Falling mortar Floors coming away from walls Collpased floors Columns or beams bending or falling Cracks in walls - especially horizontal Bowing walls Spalling concrete Collapse of arches Damage/collapse of walls in protected shafts |
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Name the different types of roofs |
Flat Mansard Pitched Trussed |
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Dangers of gang nail plates in trussed roofs |
Severely weakened by fire Conducts heat deep into the timber Can come away from the timber |
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Points to remember about trussed roofs x7 |
There are fewer timbers The spacing between beams is wider The timbers are thinner 35mm They may not have a ridge board between them Nails in trussed plates a 8-10mm traditional roofs have 100-150mm Takes 7 minutes to char at 4mm Weight cannot be applied to any part |
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Dangers of wooden floors in fire situations x4 |
Wood can burn underneath the floorboards No sign of weakened floor if carpets are laid A fire can develop without being discovered Collapsing floor joists may lever a wall of balance |
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Dangers of stairs in fire situation |
Timber-Can be no sign of collapse until weight it applied Concrete-best fire resistance Steel-loses 2 thirds of strength at 600 degrees Iron-will crack if suddenly cooled Stone-will collapse suddenly, without warning weight or being cooled |
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What are sandwich panels |
Used on framed construction Has two face plates Insulated with polystyrene or polyeurethane Has a plastic cover on the outside for added protection |
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Dangers of sandwich panels x6 |
Pvc coat is highly flammable Releases flammable & toxic smoke-hydrogen cyanide & carbon monoxide The steel sheet Conducts heat Panels may fall creating a hazard Difficult to estinguise as steel sheet acts as a barrier Won't support the weight of an individual |
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Whst is the evacuation signal |
Short Repeated blasts on a thunderer whistle |
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What steps do you follow when an evacuation takes place |
Repeat the signal Withdraw from the area as quickly and safely as possible Firefighters closest to danger exit first Protect exit route Leave any equipment Report to booking in point |
