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Issue No.48


FEBRUARY 2002 PROMOTING THE APPLICATION OF RESEARCH IN BUILDING AND CIVIL ENGINEERING


IN THIS ISSUE Buildings


Benefits of prefabricated housing 3 Curtain wall thermal performance 7 Legionnaires’ Disease


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Construction processes Benefits of prefabricated housing 3 New Timber flitch


3 Environment Winter challenges on highways 7


Flooding & drainage Catchment flood planning Flood resistance guide


Ground engineering Data handling in piling rigs


Health


Arsenic testing and treatment 6 Legionnaires’ Disease


2 Highways


Winter challanges on highways 7 Mitigating disruption from utilities 8


Hydropower


Hydropower software IT


Data handling in piling rigs Hydropower software


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6 6


Materials & structures Acoustic performance of Slimdek 2 New timber flitch brings added value3


Water engineering Arsenic testing and treatment 6 The concrete building fire test in progress T


he test was carried out on a ground floor compartment 15m x 15m in plan, including high strength concrete columns. The design fire load was 40 kg/m2


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representing typical office fire loading to the British Standards. The performance of the structure was recorded through extensive instrumentation, including thermocouple and displacement transducers, photographs, video recording and test specimens. The data is currently being collated by BRE, and will be analysed and made available for these follow- up projects that are currently being developed:


• Investigation of the effects of thermal expansion of the heated parts of the structure during a fire


• Identifying modes of whole-building behaviour that cannot be shown from standard small-scale fire tests


• Investigation of the performance of high- strength concrete in a realistic fire scenario


• Calibration and validation of computer models and the development of fire design


Research Focus NO. 48 FEBRUARY 2002


methods using a performance-based approach


• Investigation of reinstatement options.


This test is part of a wider programme of development on the fire design of concrete structures in the UK and Europe. The aim is to put into practice the design benefits to be gained from previous and new research in order to deliver more-economical concrete frame construction whilst maintaining the current high levels of safety. This will be achieved by developing new fire engineering methods from the study of whole concrete structures. Current methods are based on isolated member behaviour, whereas the new methods will look at the whole structure, taking into account the inherent fire resistance and robustness of concrete construction.


For further information please contact Dr Pal Chana at BCA (01344 762676; fax: 01344 761214;


E-mail: pchana@bca.org.uk). 1


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Guide for development site drainage 5 Understanding river flooding


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Innovative technologies for contaminated land remediation 8


Testing a concrete building in fire A full-scale concrete fire test – funded by BCA, Febelcem, Cembureau,


CONSTRUCT, RCC and BRE – was carried out successfully on the 7-storey concrete building at BRE Cardington on 26 September 2001. The overall objective was to investigate the behaviour of a full-scale concrete building subjected to a realistic compartment fire together with realistic applied static load.


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