Author: L. Hurst and A. Dutton (Consultants, Hurst Peirce + Malcolm LLP)
1 July 2015
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L. Hurst and A. Dutton (Consultants, Hurst Peirce + Malcolm LLP)
This article suggests ways in which readily available technology (a smartphone or tablet) can provide engineers and construction professionals with a simple tool to test vibrations. This is demonstrated on the new feature staircase (a lightweight and unusual structure) at the Institution's HQ in London. A free-to-download vibration testing app (beta version) has been developed by Expedition, and is introduced here.
Post-tensioned (PT) concrete floors are now widely used in the UK, particularly for high-rise buildings. This article provides information on how to scheme a PT slab and how the use of post-tensioning affects the rest of the structure. A more detailed guide to the design of PT floors can be found in The Concrete Society's Technical Report 43 (TR43): Post-tensioned concrete floors: Design handbook.
Our built heritage is a finite resource stretching back thousands of years. Protecting and conserving this heritage is a challenge requiring knowledge, skills and experience, together with an ability to bring practical engineering judgement and often creative and imaginative solutions. This paper sets out the challenges faced by engineers and some of the approaches taken in the appraisal and protection of ruins.