Veterans Administration Facility Subgrade Stabilization
Providing cost-effective, excavation-free subgrade stabilization solutions for challenging soil conditions at the Veterans Administration Facility parking lot.
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Challenge
During the construction of a new parking lot and driveway, weak, unstable soils with deficient shear strength were encountered. Bad weather caused water to accumulate across the site, which saturated the subgrade. The site was already at the elevation grade for the aggregate road base, so the client didn’t want to excavate and did not have a lot of room to use a thick section of aggregate.
What subgrade stabilization solutions did Ferguson Waterworks incorporate to prevent excavation?
Tensar analyzed the existing pavement section to calculate the planned design life. Ultimately, the client decided on a subgrade stabilization solution using Tensar’s advanced InterAx NX850 geogrid. The InterAx geogrid design increased pavement performance while saving on the cost of removal/replacement. It also proved to be much faster and cost-effective compared to chemical stabilization.
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