With the advent of lighter floor systems and the drive to lower the embodied energy in structures, meeting vibration serviceability requirements for floor systems can be a challenge. A number of guidelines have been published in the UK over the past 15 years (e.g. SCI P345, CCIP-016) that have been helpful in providing a consistent methodology. Although these can differ slightly in the detail, they are essentially based around the concept of response factor. Other methodologies have been proposed in continental Europe. The better documented one is the One-Step RMS90 (OS-RMS90) developed as part of the Technical Steel Research of the European Commission (e.g. EUR 24084 EN). Although similar in spirit, OS-RMS90 differs from the UK methodologies in key aspects which can be categorized along three strands (1) Footfall force definition, (2) Floor modelling and estimation of the dynamic response of the floor; (3) Acceptability criteria. This paper proposes a detailed comparison between these methodologies in each of these aspects and concludes by applying the methods on a composite floor case study. Based on this comparison, the merits of various quick assessments are evaluated.
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