ABSTRACT
INTRODUCTION Construction vibrations are generally of three different types:
(a) Impact vibration (b) Continuous vibration (c) Pseudo-continuous vibration.
British Standard 6472 (British Standards Institution, 1984) uses slightly different terminology without relating it to construction equipment (impulsive: rapid build-up to peak followed by damped decay, perhaps over several cycles, but can also comprise several shortduration cycles of less than 2 seconds total; intermittent: a string of vibration incidents, each of short duration, separated by intervals of much lower vibration magnitudes, but may also consist of bursts of vibration flanked by a more or less gentle rise and decay; continuous: which continues uninterrupted for a period of 16 horn's).
