Ground vibrations emanating from construction equipment.
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Ground vibrations emanating from construction equipment.

  • 2012-09-01

Filetype[PDF-4.09 MB]

  • English

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      Final report.
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    • Abstract:
      The recent trend in highway construction within New Hampshire has been toward reconstruction and rehabilitation projects in congested urban areas. This has resulted in a greater concern for vibrations generated by non-blasting construction activities, a greater potential for complaints, increased potential for damage, and increased need to monitor vibrations during the construction phase of projects. A procedure for assessing the potential impact of non-blasting construction-induced vibrations at a project site has been modeled after the “Rock Fall Hazard Rating System” as published in the Federal Highway Administration’s “Rock Slopes Reference Manual” (FHWA HI-99-007). An impact assessment of construction vibrations can consider each type of vibration producing activity and the potential impact that activity would have on man-made structures and/or vibration sensitive equipment that is in relevant proximity to the project site. A “Construction Vibration Impact Assessment Table” was developed, providing a means of rating the potential impact of a specific construction activity at a given site. This rating will allow comparison of a specific construction activity at different sites, or different construction activities at the same site. The “Construction Vibration Database” was created as part of this research project, with the intent of providing a means of recording information on various types of non-blasting construction vibration activities. It is intended that this database will be continually updated with data submitted by both in-house resources and by vibration consultant subcontractors working on NHDOT projects. This database will provide designers with a means of accessing empirical data to be used for forecasting expected vibration impacts on upcoming construction projects. The “Construction Vibration Assessment Procedure” and “Construction Vibration Database” can be used to develop a preliminary cost estimate for vibration monitoring services and as a resource for decision-making during the design and construction phases of NHDOT projects. Information was collected on a variety of non-blasting construction activities to include vibratory compaction, excavation, splitting of rock with a hoe-ram, sheet pile driving, pavement breaking, demolition, track mounted vehicles and heavy construction traffic at various project sites throughout the state.
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