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Tanks for the memory

Letters

I refer to your article on the fibre reinforced polymer bridge in Oxfordshire, which is claimed to be the first of its type in Europe (NCE 31 October). I would like again to note that a similar project was successfully completed in Bulgaria 17 years ago.

You may find an incredible similarity between this photograph and the one printed in NCE. The only difference is that the clear span of our bridge is 12.5m compared to 11m for the Oxfordshire bridge.

The Russian T34 tank we used for informal load test was, like the Sherman tank, also exactly 34 tonnes and dates from the time of the second world war. In fact we used the tank for dynamic tests where the tank jumped on the bridge from 200 mm height at speed of about 30km/h. For the static load test twice this weight was used.

Ivaylo Anguelov, 82 Mary Fisher Crescent, Dumbarton, G82 1BF

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