Steel Sheeting Guide Frame Fit’s the Bill on a Vault Installation

BY National Trench Safety

NTS stands alone as the sole trench and traffic safety equipment enterprise boasting a nationwide branch network. Our extensive, diverse inventory encompasses equipment available for both rental and sale, accompanied by traffic and trench safety engineering services. Additionally, we offer a broad OSHA-compliant training curriculum. Fundamentally, NTS is a service-oriented organization, a commitment reflected in our mission statement.

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Stormwater vaults are known as a detention and infiltration management system that helps control water runoff and prevent storm drain lines from overloading. Stormwater vaults are normally used in areas where the existing infrastructure in place, or when the newly added construction’s footprint, exceeds the current storm system capabilities. A similar scenario was underway in a county near the City of Denver. The project required the use of a stormwater vault that could manage the water runoff of a 2-mile stretch of a new highway. The installation of the vault would require an excavation 20-ft long, 20-ft wide, and 18-ft in-depth in what the designated Competent Person had classified as Type C-60 soil. The contractor was well experienced on large infrastructure projects and needed a versatile shoring solution that could secure a large span area, allowed the crew to work around the existing utility infrastructure, and provided paramount soil support to alleviate the pressure loads created from an adjacent roadway. After considering several options, the contractor elected to use Steel Sheeting Guide Frames as the best solution to address the underlying concerns.

Steel sheeting guide frames are a versatile shoring system that can be used in two or four-sided applications and can be paired with steel spreaders to provide additional support. The guide frames are steel panels designed with internal channels that allow for individual steel sheeting to be inserted through the channels. The system is typically installed via the dig and push method. The flexibility of the guide frame shoring system permits steel sheeting to be installed at various depths to accommodate for existing utility crossings while maintaining paramount soil support. Utilizing the steel sheet guide frames allowed the contractor to quickly and safely pour in place the large vault. Once the large vault is operational, it will diminish the effects of future erosion and preserve the vital infrastructure of the surrounding area. The contractor was happy with the ease of installation, the time saved, and the ability to work around the existing utilities.

 

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