Concrete your Fingertips Footfall-induced vibration When people walk on floors, staircases, bridges or other structures they apply dynamic forces that cause the structures to vibrate. The vibration amplitude is normally very small and is not normally significant in terms of structural integrity. However, it can often be felt by other people and if excessive can be distracting. Vibration can also impair the function of sensitive equipment and can be of particular concern in areas of hospitals such as operating theatres.
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This publication provides an informative description of thefactorseffectingfootfall inducedvibration and guides the engineer throughthe process of designingforvibration. The methods A tool for designers to engineer the footfall vibrationfootfallvibration can be a critical serviceability condition.
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Readers should note that publications are subject to revisionfrom time to time and should therefore ensure that they are in possession of the latest version. Footfall Induced Vibration cover2 2 A cement and concrete industry publicationAcknowledgementsThe authors would like to acknowledge the contribution of their colleagues atArup to thevalidationofthe methodsdescribed inthis guide, in particularCaroline Field, KathyGubbins, Kubilay Hicyilmazand MarkArkinstall. The authors would like to thank DrStuart Kerrfor providing the data which is the basis of thefootfallforces used here.
Finally, special thanks are due to ProfessorTomWyatt of ImperialCollege London, who was theindependent peer reviewerfor this document. Introduction Understanding footfall induced vibration Quantifying vibration Predicting footfall induced vibration of structures Worked examples 62References 66Glossary 75Appendix A. Evaluating modal properties of a structure 79Appendix B. Procedures for measuring floor response Appendix C.
A Design Guide for Footfall Induced Vibration of Structures