ZoneCheckSM (USA and Canada)

Estimating Ground Vibration Distance Just Got Easier

Travelers’ online construction vibration tool, ZoneCheck, is designed to help you identify potential [equipment-generated] ground vibration risks. With it you can complete preconstruction project surveys in real time, either on the jobsite or from your office.

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ZoneCheck conveniently centralizes industry-recognized ground vibration data for construction equipment by soil types. The resulting calculations indicate how far ground vibrations can extend to surrounding structures or people. ZoneCheck also helps you document preconstruction evaluations that can be easily shared electronically.

Use ZoneCheck to evaluate equipment-generated ground vibrations

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Use ZoneCheck to:

  • Establish or refine your strategy for pre-construction surveys
  • Estimate the potential for ground vibration to impact nearby structures or be perceived by occupants
  • Develop measures to help mitigate against damages caused by vibration generating work

Use of construction equipment can create ground vibrations potentially impacting surrounding structures, therefore, understanding the potential risk of property damage is an important aspect of preconstruction surveys.

ZoneCheck develops two radii from the source; the “alert zone” and the “human perception zone”. The “alert zone” is closer to the vibration source. Structures within this zone should receive a higher degree of analysis/review and include photos documenting exterior building conditions and, where appropriate, interior photos.  In certain situations, seismographs may need to be positioned in key areas to document the levels of ground vibrations, and construction methods may need to be altered to protect more sensitive structures. In the outer radius, the “human perception zone”, vibrations are likely to be perceived by occupants but less likely to result in structural building damage. Understanding the human perception zone and following appropriate measures can prepare you in the event occupants perceive vibrations and allege damages.

Once you input the equipment and soil type into ZoneCheck, an aerial image of your project site/area is generated that includes both “zones” of influence and their distances. This information can help you further develop mitigation plans specific to the type of work underway.

ZoneCheck can also produce documentation you can share with other stakeholders at your project with the tap of a button. If allegations are made linking your work to property damage caused by ground vibration, these reports can help document steps taken before work starts, and potentially mitigate these exposures.

For instructions on how to use the tool, click here.

  

The information provided in this document is intended for use as a guideline and is not intended as, nor does it constitute, legal or professional advice. Travelers does not warrant that adherence to, or compliance with, any recommendations, best practices, checklists, or guidelines will result in a particular outcome. In no event will Travelers, or any of its subsidiaries or affiliates, be liable in tort or in contract to anyone who has access to or uses this information for any purpose. Travelers does not warrant that the information in this document constitutes a complete and finite list of each and every item or procedure related to the topics or issues referenced herein. Furthermore, federal, state, provincial, municipal or local laws, regulations, standards or codes, as is applicable, may change from time to time and the user should always refer to the most current requirements. This material does not amend, or otherwise affect, the provisions or coverages of any insurance policy or bond issued by Travelers, nor is it a representation that coverage does or does not exist for any particular claim or loss under any such policy or bond. Coverage depends on the facts and circumstances involved in the claim or loss, all applicable policy or bond provisions, and any applicable law.

The information provided in this document is intended for use as a guideline and is not intended as, nor does it constitute, legal or professional advice. Travelers does not warrant that adherence to, or compliance with, any recommendations, best practices, checklists, or guidelines will result in a particular outcome. In no event will Travelers, or any of its subsidiaries or affiliates, be liable in tort or in contract to anyone who has access to or uses this information for any purpose. Travelers does not warrant that the information in this document constitutes a complete and finite list of each and every item or procedure related to the topics or issues referenced herein. Furthermore, federal, state, provincial, municipal or local laws, regulations, standards or codes, as is applicable, may change from time to time and the user should always refer to the most current requirements. This material does not amend, or otherwise affect, the provisions or coverages of any insurance policy or bond issued by Travelers, nor is it a representation that coverage does or does not exist for any particular claim or loss under any such policy or bond. Coverage depends on the facts and circumstances involved in the claim or loss, all applicable policy or bond provisions, and any applicable law. (myt055)