The front entrance to this rehabilitation center in the Cincinnati suburb of Green Township required a 39-foot., two-tiered retaining wall structure. Not only was the retaining wall to be a highly visible and significant structural feature of the project, its foundation was initially planned to be located in a highly slide-prone, colluvial soil formation.
JC Hines and Associates quickly went to work with the architect, the project geotechnical engineer, site civil engineer, the building structural engineer and the site contractor to determine the most cost effective solution for the retaining wall foundation. The solution was the design and construction of a deep gravel keyway that allowed the retaining wall to buttress the slide-prone soil layer and anchor it in competent bedrock. Construction was completed in 2010.