Abstract
A soil nailed wall was used to stabilize a slope on the Cumberland Gap near the Kentucky portal at the top of a planned cut 150 ft. high. The structure was analyzed for stability both internal and external to the nail-reinforced earth mass. It is noted that nail spacing and length of the nail are keys to ensuring that soil acts as a coherent mass. This article describes details of the construction and testing. European and U.S. experience suggests that soil-nailed walls cost about one-third less than tieback walls or gravity walls.
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