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Cardington fire tests design guidance

Between 1994 and 2003, a series of seven fire tests were carried out on an eight storey steel framed building with composite metal deck floors at the Building Research Establishment facility at Cardington in Bedfordshire.

The test programme was divided into two parts; the first, comprising a single beam test and three large compartment tests was funded partly by Corus (now Tata Steel) and partly by the European Coal and Steel Community (now the Research Fund for Coal & Steel). A complementary programme, comprising three compartment tests was Government sponsored and carried out by the Building Research Establishment.

 

Figure 56 The Cardington frame is a multi-storey composite structure, ie the floors are constructed using shallow composite slabs with profiled steel decking attached by shear connectors to downstand beams. The design guidance developed from the fire tests applies only to frames of this type.
    
Cardington Design Guidance :

Cardington Design Guidance : Cardington Design Guidance

A simple structural model has been developed which combined the residual strength of the steel composite beams with strength of the slab.

Cardington fire tests :

Cardington fire tests : Cardington fire tests

The tests were carried out to determine if the fire performance of real buildings of this type is better than is suggested by tests on individual elements of construction.

Fire resistance of composite floors :

Fire resistance of composite floors : Fire resistance of composite floors

Observations from the Cardington fire tests and other large building fires have shown that the behaviour of the composite floor slab plays a crucial role in providing enhanced fire resistance.

 

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