03-02-2013, 05:23 AM
Operation and maintenance of bridge access gantries and runways. 2nd edition
Size: 2.3 MB | Format: PDF | Quality: Unspecified | Publisher: The Institution of Structural Engineers | Year: 2007 | pages: 82 | ISBN: 978-1-906335-00-7
I always wanted to be a bridge engineer. As a young man I worked on a number of big bridges and experienced a wide range of erection gantries. Most of them were a challenge to my comfort. Despite moving out of bridges and into academia 30 years ago, I have retained an interest in big bridges and I was very pleased to be asked to steer this Guide into a second edition. Bridge gantries, whether used for access or for works, can be a cause of real danger. Despite considerable efforts to improve design, manufacture and management of gantries, failures still occur and people are still killed. It may seem strange that the first message in a volume about gantries should be, “don’t use them unless you have to, and if you think you have to, think again”. Other forms of access are always being developed and even an existing gantry may be more difficult to use and more dangerous than a modern, flexible system. Of course, there are bridges where nothing else will do, where a gantry is truly essential, but even there, making a complex gantry that can reach into difficult corners may not be justified.
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