AS ISO 2631.2:2014 pdf free
AS ISO 2631.2:2014 pdf free.Mechanical vibration and shock – Evaluation of human exposure to whole-body vibration
The evaluation with respect to human response shall be based solely on the expected occupation, the tasks performed by the occupants, and the expected freedom from disturbance. Each relevant place or room shall be assessed with respect to these criteria. The vibration shall be measured at that location in the room where the highest magnitude of the frequency-weighted vibration occurs, or as specifically directed, on a suitable surface of the building structure.
NOTE It may be necessary to take measurements at several locations in the building to determine the local variation of the vibration.
Experience in many countries has shown that adverse comments regarding building vibration in residential situations may arise from occupants of buildings when the vibration magnitudes are only slightly in excess of perception levels (see ISO 2631-1:1997, Annex C). In some cases complaints arise due to secondary effects associated with vibration, e.g. reradiated noise (see Annex B). In general, satisfactory magnitudes are likely to be related to general expectations and to economic, social and other environmental factors. They are not determined by factors such as short-term health hazards and working efficiency. Indeed, in practically all cases the magnitudes are such that fatigue directly induced by the motion is very unlikely.
Situations exist where significantly higher vibration magnitudes can be tolerated, particularly for temporary disturbances and transient events. Examples of this are construction projects. Any startle factor can be reduced by a proper programme of public relations which may include announcements such as warning signals and/or concerning regularity of occurrence. Only in extremely rare cases should it be necessary to consult the criterion“health” as given in ISO 2631-1. For situations in which vibration occurs over an extended period, long-term familiarization may give rise to a change in adverse comment thresholds.AS ISO 2631.2 pdf free download.
