Vibration monitoring case study
Joe Francisco, project management and business development lead with Fenagh Engineering & Testing, likes to be in control. “We like to control what happens on our projects and be as hands-on as possible,” he explained. So when a long-standing client asked the firm to oversee vibration monitoring on the construction of the new City Center in Dedham, MA, he knew two things: one, that they’d do it themselves vs. subcontracting it out; and two, that he’d want to use Inzwa’s Veva III vibration monitors and Cloud platform to do it.
Francisco had handled past vibration monitoring projects differently and with less-than-satisfactory results. When renting and installing legacy geophone devices on a project in 2016, he found the installation to be cumbersome and the reporting configuration and generation high maintenance. “Previously, it took about a week to set up and configure [geophone devices], to get comfortable with the system, and get the reporting we needed. Plus, having to get them hooked up to power on-site was another challenge,” he said. “It was also kind of difficult to configure and generate reports ourselves. The next time we were asked by a client to do vibration monitoring, we were reluctant to do it.”
Other vibration monitoring projects that were subcontracted out posed other challenges. In addition to not giving him full visibility and control of the monitoring and reporting, “It was a struggle at times to get more than the basic, rudimentary reports,“ Joe observed. “Or the specific reporting we needed when we needed it.”
For the 200,000-square-foot City Center project, Francisco wanted full control and full visibility of the vibration data, with the ability to remotely configure and distribute the reporting he needed, when he needed it. He installed three Inzwa Veva III devices at strategic locations on site prior to and during the pile driving phase of construction – a critical phase, given that several abutting businesses (including the city’s new City Hall) had expressed significant concern over the potential for disruptive vibrations during this process. He managed the configuration and reporting requirements with Inzwa’s Cloud platform, with which the devices came pre-configured.
The Inzwa system was installed and monitoring baseline levels for approximately one month prior to the pile driving phase of the project. Once pile driving commenced, Fenagh experienced no issues in the vibration monitoring or reporting, and Francisco was able to monitor the vibration levels directly for their client, in real time, easily and quickly generating and distributing the reporting needed to all stakeholders. “Our ability to closely monitor the activity, get reports out quickly, and answer any questions that come up in real time is critical to the success of this project,” he said.
“The experience with Inzwa has been excellent,” Francisco concluded. “So much so, I recommended them to our New York office for a project they have coming up.”
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INZWA
sales@inzwatech.com
200 W. Butler Avenue, Unit 3111
Philadelphia, PA 19002
844-44-INZWA
