12.2.2.6-1 Building Vibration
Building-induced whole-body vibration should not produce discomfort or annoyance in building users.
Additional Information: Vibration levels that can produce discomfort or annoyance may interfere with task performance. When humans are exposed to whole-body vibration from buildings, the Wm frequency weighting should be used over the frequency range 1 Hz to 80 Hz, as specified in ISO 2631-2 (2003).
Whole-body vibrations should not cause adverse health effects to users, especially low-back pain, digestive disorders, fatigue, or general discomfort. The following applies to whole-body vibration:
- The daily exposure limit value (ELV), adjusted for an 8-hour reference period,should be 1.15m/s2. Whole body vibration above this ELV should not be permitted.
- The daily exposure action value (EAV), adjusted to an 8-hour reference period, should be 0.5 m/s2. Whole-body vibration above this EAV and below the ELV defined above should result in engineering controls and administrative actions to bring the user whole-body vibration exposure to below the EAV. Whole-body vibration below the EAV requires no action.
- The assessment of the level of exposure to vibration is based on the calculation of daily exposure, expressed as equivalent continuous acceleration over an 8-hour period, calculated as the highest (rms) value, or the highest vibration dose value of the frequency-weighted accelerations, determined on three orthogonal axes in accordance with ISO 2631-1(1997).
Hand-arm vibrations should not cause adverse health effects to users, especially symptoms of the Hand- Arm Vibration Syndrome. NIOSH 83-110 (1983) has more information concerning this syndrome. Note the following for hand-arm vibration:
- The daily ELV, adjusted for an 8-hour reference period, should be 5 m/s2. Hand-arm vibration above this ELV should not be permitted.
- The daily EAV, adjusted to an 8-reference period, should be 2.5 m/s2. Hand-arm vibration above this EAV and below the ELV defined above, should result in engineering controls and administrative actions to bring the user hand-arm vibration exposure to below the EAV. Hand- arm vibration below the EAV requires no action.
- The assessment of the level of exposure to hand-arm vibration is based on the calculation of the daily exposure value adjusted to an 8-hour reference period, expressed as the square root of the sum of the squares (rms total value) of the frequency-weighted acceleration values, determined on the orthogonal axes as defined in ISO 5349-1(2001). 1472G