Author: A. Holdsworth (Andun)
1 August 2018
First published: 1 August 2018
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A. Holdsworth (Andun)
Many modern office towers are of steel-composite constructione. However, the lightweight nature of steel means a lower modal mass – and vibrations from active sources (e.g. footfall) need be considered carefully during the design stage. This article discusses vibration performance and mitigation based on recent experience in Singapore.
Last month’s article in the series covered the theory and detailed methods recommended for calculating backpropping loads. This article continues by discussing some of the design issues and preconceptions related to backpropping, and gives worked examples.
A structure in its permanent state cannot be ‘wished into place’. Appropriate consideration must be given to construction methodology so that permanent works can be optimised, temporary works minimised and trade interfaces simplified. This article presents a list of general, high-level considerations that relate to construction methodology and optimisation of temporary/permanent works, with a number of examples provided.