Utilize Sheeting and Shoring for Safer, More Efficient Excavations
Deep excavation projects in areas with an abundance of existing structures, underground infrastructure, busy streets, and MTA systems require accounting for many variables to ensure safety and stability. The complexity of these projects is only heightened by the fact that you typically have to dig straight down because neighboring and adjacent structures are so close to property lines. FNA’s temporary excavation support systems enable you to use every inch of space available while withstanding earth pressure or surcharge loads within the excavation site.
Since 1992, we’ve developed the expertise to effectively design practical and cost-effective excavation sheeting and shoring solutions . FNA’s constructible, creative, and efficient designs have made us the first choice for developers and contractors throughout the Tri-State area. Our sheeting and shoring excavation services facilitate various construction projects, including those involving groundwater and a range of soil types.
FNA Provided geotechnical design services, deep foundation element design, temporary support of excavation design, and NYCT consulting services for all phases of the 610 Lexington Avenue building and many other notable projects.
Sheeting and shoring are typically the ideal temporary excavation support system solution for construction projects that require soil and nearby structures to be stabilized. Several materials and methods are available depending on the soil, the magnitude of forces, and the pressure in the open excavation arena, including:
- Soldier piles and lagging: Soldier piles are a budget-friendly solution that provides flexibility in construction materials and installation expediency. This sheeting and shoring solution can also be used as a permanent excavation support system.
- Secant piles: Secant piles have an increased wall stiffness compared to sheet piles and are applicable in challenging ground conditions like cobbles and boulders. They also cause less noise and do not require timber laggings.
- Contiguous or tangent piles: Typically used for slope stabilization and bulkhead support, contiguous piles are temporary excavation support systems that cause fewer vibrations during construction.
- Sheet piles: Sheet piles offer high resistance to driving stresses and are easily adapted to pile length by bolding or welding. They also provide long service lives above and below water with proper protection and are less likely to be deformed during driving.
- Soil nail piles: Soil nail piles are most commonly used in top-down applications and allow excavations to begin while shoring systems are installed.
- Diaphragm walls: FNA utilizes diaphragm walls for deep-depth excavations and when basement excavations require minimal ground movement.