BS 6611 relates to typical responses of people to the horizontal motion of structures in the frequency range 0,063 to 1 Hz. The recommendations are categorized in accordance with the use of the structures and, in the case of off-shore fixed structures, with the nature of work being carried out.
Note: Injury of occupants due to structural vibration is outside the scope of BS 6611.
BS 6611 on evaluation of the response of occupants of fixed structures is useful for:
Unresponsive building structures have led people to expect buildings to provide nearly stationary accommodation, even under storm conditions, and the occupants of buildings are prepared to accept only extremely low levels of motion.
BS 6611 specifies that whole-body motion caused by structural vibrations induced by infrequent external environmental forces is considered separately from whole-body motion resulting from structural vibrations caused by frequently occurring force actions. Frequently occurring force actions that arise from external sources, machinery, or structure services such as elevators, fans, air conditioners, heating units, and plumbing. BS 6611 specifies both perceptible magnitudes of low-frequency horizontal motion of structures and magnitudes only minimum adverse comment.
Overall, BS 6611 proposes magnitudes of low-frequency horizontal motion that should produce only minimum adverse comments from people working or living in buildings.
ISO 6897