tors is key. Having a single unit that can measure parameters such as noise, dust and vibration means only one unit to install, and one set of software with which to interact and learn, making the process easier and saving time. Once units are installed at a site boundary, they need very little interaction – "set it and forget it", as the phrase goes. They enact monitoring 24/7 without input, running either from mains, battery, or even solar powered configurations. Preventing issues with surrounding residents Users can then receive automatically generated, customized reports to a set schedule, or when specific emissions limits are reached, preventing issues with surrounding residents and subsequent complaints to authori- ties. Limits can be used to trigger preventative measures such as dust suppression. Managers only need to check a single unit or combined data report, a more efficient method than checking multiple monitors and data sources. Alerts can be sent instantly via text, allowing sites to monitor levels around the clock and react quickly to reduce levels of dust or noise that exceed set limits and mitigate potential negative out- comes, and give site managers a reliable data source that can be accessed
any time. Daily, weekly, or monthly reports can be sent directly to an email inbox in graphical or tablature format and can even be supplied directly to local authority or environmental organizations – getting ahead of potential site-visits from inspectors. If possible, baseline conditions should be established by testing before the start of operations and con- tinued throughout the operation to observe site emissions and ensure compliance with planning conditions. Having access to real-time, near- reference data can help save site managers time, ensure environmental incidents are prevented and keep more people safe. Casella is dedicated to reducing occupational health and environmental risks and supporting businesses in solving their monitoring and analysis needs. For more information about Casella’s noise monitoring solutions visit, https://www.casellasolutions.com/us/en.html TIM TURNEY is Global Marketing Manager at Casella and graduated as an engineer from Queen Mary and Westfield in London. Since starting at Casella in 1998, Tim has been involved in the acoustics and air sampling industry, specializing in measurement and instrumentation technologies.
“Only one precast tee failed, and we weren’t sure why,” said Devyn No- vak, a project manager for ICM. “Given that, we had to treat the entire roof as being unsafe and capable of collapsing at any time.” This led ICM to develop a one-of-a-kind rigging system to extract the damaged portion of the roof, along with a fall protection and arrest plan that provided 100 percent tie off for a span of over 200 feet in width, which was longer than ICM had ever accounted for. “There was nothing off the shelf that we could easily buy given the size of the tank,” said Dave Montoya, safety director for ICM. “That made us develop a unique fall protection system that anchored independently from the reservoir, which was necessary in order to safely stabilize the men while they extracted and replaced the roof.” Partnership and Teamwork Essential to Success Luckily, ICM already had a freestanding fall protection system that had been designed in house and used for pre-engineered metal buildings, which the team used as a guidepost for developing the new system. ICM turned to Printz Engineering Services to provide the calculations for the rigging system and for the custom fall protection plan given the unique dynamics of the project. “Printz Engineering was a great partner in that they helped us ensure that our ideas would work on and off paper,” said Novak. “That was critical
When part of the roof over the Watts Reservoir near Pueblo, Colorado collapsed in the summer of 2021, it became clear that extracting and replacing it was going to be no easy feat, particularly since the roof covered a concrete cast-in-place tank that was 188 feet by 224 feet and covered over 42,000 square feet. Responsible for holding up to 5 million gallons of potable drinking wa- ter, the Watts Reservoir was built by The Pueblo Board of Waterworks in 1931. In the mid-1970s, a roof was added to protect the reservoir’s use as a drinking source for area residents. The roof was held up by over 100 precast twin tees, one of which col- lapsed due to corrosion, causing the entire structure to be compromised. Industrial Constructors/Managers, Inc. (ICM) was contracted to extract and replace the roof, which proved challenging since no one could get underneath it given the dangers involved. Reservoir Roof Replacement Leads to Innovative Fall Protection Plan
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September 2022 csengineermag.com
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