A tale of two towers: Big Ben and Pisa - Royal Academy of ...

6. CONCLUSION
A Tale of Two Towers
The conservation of both the Big Ben Clock Tower and the Tower of Pisa has provided
immense civil engineering challenges. Both compensation grouting and soil extraction are highly
innovative methods of stabilisation that are completely consistent with the requirements of
architectural conservation. Their implementation has required advanced computer modelling,
large-scale development trials, an exceptional level of continuous high precision monitoring and
carefully developed systems of day by day communication and control.
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The Royal Academy of Engineering
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