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Fire developed at a partially complete 14 level multistory building at. A fire grew with temperatures estimated at around 1000°C and although structural steel is estimated to become elastic at around 600°C however, some structural beams were deformed but no structural failure occurred and the integrity of the floor slabs were maintained (constructed using longspan lattice trusses and beams supporting concrete slabs) throughout the fire. The building construction was not completed therefore contained no passive fire-‐protection on the steelwork. The sprinkler systems & other active measures were not yet commissioned and not in operation. Following the fire, it was observed that no connections had failed. However, there were deformations of bolt holes, broken bolt heads, and some of the connection plates had fractured along the length of their beams but had still managed to transfer shear appropriately, various levels of deformation observed in support structures, those deformations were due to tensile forces induced during cooling. The estimated cost of damage was around £25m
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Structural analysis following the fire proved that fire protection for structural elements are over specified and are not required as much as once thought, fire-‐engineering principles can be applied to reduce the cost of fire protection and therefore cost of construction.
This became a catalyst for steel companies to carry out research in order to gain an economical benefit which has shown that the inherent fire resistance of this common structural framing system is far greater than is demonstrated using standard fire tests.
In the Cardington large scale fire tests it was shown that unprotected beams which would fail within 20 minutes for a simply supported structure using a standard fire test could in fact survive offering over one hour fire resistance. This finding now underpins much of modern structural fire engineering
Broadgate, London 1990
Event Statistics
Unknown
Lessons Learned
Duration of fire
Number of casualties
Cost to industry
References
None
£25 million
Broadgate Investigation. 1990.[Online]. [Accessed 31 October 2014]. http://www.mace.manchester.ac.uk Prof.Andwers. Broadgate incident. Fire Explosion Prediction & Investigation, October, 2014, Weetwood Hall Leeds.
Type of fire Construction Fire
Unknown Ignition Source
56
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Fire at Hays business located at Gillender st, London had a number of events that hampered the efforts of the fire fighting crews. Firstly employees delayed for seven minutes after the fire alarm went off before calling the brigade. Fire crews located the fire early in the incident and laid a hose. However, it was never used, despite the manual of firemanship stating that water should be applied to a fire as soon as possible. There were major failings in
o Command and control, o Failure to debrief crews, o Failure to protect members against
heat stress, o Failure to organise reliefs, o Failure to organise ventilation o Failure to organise firefighting in
general
This unfortunately these inefficiencies led to the deaths of two firefighters namely Stokes and Hunt.
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Mr Hunt, 33, from Chadwell Heath, Essex, and Mr Stokoe, 25, from Hornchurch, Essex, died after running out of breathing apparatus oxygen Following an investigation The HSE served two improvement notices taking action against the fire brigade The serving of the notices is revealed in a report sent to all 114 fire stations by Brian Robinson, Chief Fire Officer and director of operations for London. The key outcome form the enquiry has prompted better training for the Fire Brigade to avoid such failures in the future.
Gillender St, London July 10, 1991
Event Statistics
Several hours
Lessons Learned
Duration of fire
Number of casualties
Cost to industry
References
2 Fire Fighter Casualties
2 lives of fire service personnel, the rebuild of the building
Heys Business, Gillender St London. 1991.[Online]. [Accessed 8 November 2014]. http://www.independent.co.uk/news/uk/fire-‐brigade-‐told-‐to-‐reform-‐training-‐after-‐blaze-‐deaths-‐1555689.html
Type of fire Hydrocarbon
Arson / Deliberate Ignition Source