Many building projects involve utilizing vibration-inducing heavy machinery, which can cause vibration damage passed on through the ground to structures near the construction site. Due to this occurrence, using vibration monitoring equipment for construction to monitor vibration levels during specific building activities, phases, and operations has become routine protocol on many construction projects, especially large ones.
Failure to outline and adhere to maximum vibration limits during building construction operations can result in significant building repair expenses and scheduling delays for the contractor. Pile driving operations, the use of ABI machines, demolition activities, shoring installation, and soil extraction are some of these kinds of building operations and activities that need vibration monitoring.
Reasons For Vibration Monitoring
In construction, vibration monitoring is often carried out for two reasons:
1.To satisfy building regulations and ordinances, the contractor expects real-time vibration monitoring to guarantee that vibration levels do not exceed pre-defined limitations.
2.The contractor is expected to record the vibration levels generated during construction to avoid future litigation from individuals or groups claiming that construction activities caused building damage.
Recognizing Building Damage Caused by Vibration
Building deterioration may range from supposedly minor concerns like loose paint and plaster to far more catastrophic ones like masonry dislodging and structural weakness. The amount and length of the vibration, the kind of ground, and the structure and age of the neighbouring buildings are all factors that influence whether or not damage occurs to nearby buildings during building construction.
It is feasible to predict where vibration problems may develop on the building site with some knowledge about the machine’s vibration levels and the construction site’s layout. Building damage can be considerably reduced by preparing ahead of time.
Acting Against Vibration Damage
While it is not always viable to design mitigation measures to prevent vibration beforehand, different construction methods may be necessary for some sections of the project site where vibration difficulties may arise.
Construction-site vibration monitoring systems generally measure peak particle velocity (PPV) vibration levels in the x, y, and z axes. The PPV measure corresponds highly with both building damage and human pain and is hence the best value to monitor. Limiting PPV values for the most sensitive structures (e.g., historical monuments) can be as low as 0.06 inch/s and as high as 1.8 inch/s for new industrial buildings.
Many monitoring systems employ construction vibration monitoring sensors with alarm ringers or text alerts to offer an instantaneous indication of when vibration limits are exceeded, enforcing an automatic shutdown of vibration-inducing machinery to prevent building damage. It is also possible to determine the sources of vibration problems and examine suitable mitigation methods with the help of an on-site monitoring professional.
It is typical of contractors to request and analyze construction vibration monitoring sensors from which daily vibration monitoring reports are gotten to analyze and document vibration measurement data so that they can always be on top of the possibility of building damage as the project continues.
Inzwa is a Philadelphia-based project monitoring firm that offers long-term, short-term, and a unique all-in-one geotechnical monitoring solution for all project types throughout Pennsylvania. Our sophisticated vibration monitoring equipment for construction is designed for long-term measurement and data logging. We are also highly experienced experts with extensive expertise in dealing with various vibration problems. To learn more, contact us here.