Cause of the collapse of Heathrow rail tunnel in 1999 and what should have been done to prevent the collapse

Cause of the collapse of Heathrow rail tunnel in 1999 and what should have been done to prevent the collapse Essay example
Masters
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Engineering and Construction
Pages 6 (1506 words)
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The Heathrow Collapse Name: Institution: Introduction The case filed by the Health and Safety Executive (HSE) against Balfour Beatty and Geoconsult exposed the causes of the collapse of the Central Terminal Area (CTA) at the Heathrow Express Rail Link at The Heathrow Airport found in London…

Introduction

NATM was implementing one of the firsts in almost everything. The technology of the method involves spraying shotcrete around the surrounding of the tunnel. This process leads to the formation of the supportive crust though temporarily. It was the first time that the project was used in London clay and the method being new most of the people working in the tunnel were not familiar with some of its aspects. In addition, the New Austrian Tunnelling Method (NATM) applied the self-certification method for the first time at the London Heathrow Airport site (Muir, 2000, p. 19). This method requires that contractors be charged with the responsibility of certifying their work. This method offers no opportunities for oversight management. The case resulted in Balfour Beatty receiving a heavy fine of one point two million pounds while the same court slammed Geoconsult with a five hundred thousand pounds fine for its less capable role. The collapse The collapse occurred on the night twentieth and twenty-first of October in nineteen ninety-four. There were no casualties but the cost of recovery amounted to one hundred and fifty million pounds. The project stalled for six more months and disruption of the underground Jubilee Line Extension. ...
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