buildings and BS covers the measurement and evaluation of structural vibration. BS contains guidance on damage levels. BS Evaluation and measurement for vibration in buildings – Part 2: Guide to damage levels from groundborne vibration. Frequency-independent and frequency-dependent guide levels are described in both British Standard BS –2: Evaluation and measurement for.
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The Department accepts no responsibility or liability for any issues caused by you relying on any information stored on these websites. Frequency-dependent limits have the capacity to precisely deal with the hazards presented by ground vibration and are seen as the basis for best practice blasting.
The particular frequency-dependent criteria should be reported with the measurements. All the limits given in this be are peak component particle velocities, as used in overseas standards and guidelines.
The classification of type of 7835-2 may be difficult; when in doubt, a more conservative limit from the nearest description in the structural damage table should be applied. Because the human response to vibration depends on a range of factors, such as vibration levels, location and time of day, different statutory requirements for human comfort limits for ground vibration may apply in different jurisdictions.
4.4 Ground vibration limits
General guidance on human response to building vibrations is given in AS Vibration in buildings 1 Hz to 80 HzBS —1: Vibration sources other than blastingand BS —2: A typical set of limit 7385- for human comfort is shown in Table 4.
Currently there exists no Australian Standard for assessment of building damage caused by vibrational energy. This section summarises the most relevant available standards from the United Kingdom, the United States and Germany. Frequency-independent and frequency-dependent guide levels are described in both British Standard BS —2: The levels specified are peak component particle velocities, and the methods used for assessing the frequencies are similar in both documents.
Frequency-dependent criteria are important for assessing the blast-induced vibration effects on buildings and other structures and are the recommended approach. Frequency-dependent criteria may not be readily implemented for all applications. For blasting operators who do not have the facilities to use frequency-dependent assessment methods, the levels specified in Table 4. The table should be used in conjunction with the notes.
Wherever possible, the ground vibration levels from all blasting 73852- must be limited to the damage limit criteria shown below at all sites not in the ownership or control of the organisation commissioning the blasting.
Ground vibration limits
USBM ‘Safe’ blasting vibration level criteria. Research suggests that the guide values and assessment methods given in BS —2 and USBM RI are applicable to Australian conditions, and are recommended for explosives users with the facilities to make gs of them.
The estimation of the frequency of each vibration component to be used in structural damage assessment is complex. The USBM RI and BS —2 methods for assessing frequencies have been widely used for many years, and were suitable for use with desktop and laptop computers with the power that was commonly available in the s and early s.
It appears that the motion frequencies determined by simple methods, such as zero crossing, are conservative for assessing damage potential. German Standard DIN —3: Skip to main content. Site Information Accessibility Copyright Disclaimer.
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Industrial and heavy commercial buildings. Unreinforced or light framed structure.
Structures that because of vs particular sensitivity to vibration, do not correspond to those listed in Lines 1 or 2 and have intrinsic value e.