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The main sources of ground vibrations at construction are pile driving, dynamic compaction, blasting, and operation of heavy construction equipment. These vibrations may harmfully affect surrounding buildings, and their effect ranges from disturbance of residents to visible structural damage.
Vibration (from Latin vibrāre 'to shake') is a mechanical phenomenon whereby oscillations occur about an equilibrium point.Vibration may be deterministic if the oscillations can be characterised precisely (e.g. the periodic motion of a pendulum), or random if the oscillations can only be analysed statistically (e.g. the movement of a tire on a gravel road).
The AMCA inside Technical Seminar provides engineers with basic information regarding devices and engineering principles relevant to the air movement and air control industry. The Engineering Conference is a discussion forum for presentation of engineering papers written by engineers and experts in the air movement and control industry.
Vibration isolation is the prevention of transmission of vibration from one component of a system to others parts of the same system, as in buildings or mechanical systems. [1] Vibration is undesirable in many domains, primarily engineered systems and habitable spaces, and methods have been developed to prevent the transfer of vibration to such ...
The use of engineering control approaches to reduce noise at the source is preferred and can be accomplished by several means, including: using quieter tools, using vibration isolation or dampers on machinery, and disrupting the noise path by using barriers or sound insulation around the equipment [23] [24]
The level of vibration can be compared with historical baseline values such as former start ups and shutdowns, and in some cases established standards such as load changes, to assess the severity. Machinery and parts OEM also define vibration limits based on the machine design or of the internal parts, e.g. fault frequencies of bearings.
BS 5228 Code of practice for noise and vibration control on construction and open sites; BS 5252 for colour-coordination in building construction; BS 5306: Fire extinguishing installations [13] BS 5306-0:2011: Guide for the selection of installed systems and other fire equipment; BS 5306-1:2006: Hose reels and foam inlets
In earthquake engineering, vibration control is a set of technical means aimed to mitigate seismic impacts in building and non-building structures. All seismic vibration control devices may be classified as passive, active or hybrid [1] where: Base isolator being tested at the UCSD Caltrans-SRMD facility