Column-Supported Embankment Solves Time Constraint for New Road Construction

Geosynthetic-reinforced column-supported embankments (GRCSE) have emerged as an effective alternative to conventional geotechnical solutions when constructing on soft soils. This paper will present a case history of a recently completed project that used GRCSE to solve the problem of rapidly constructing an embankment over soft compressible soil. The paper will focus on the design methodology used to design the column-supported embankment, the construction quality control measures used during construction (i.e., automated monitoring system for installation of piles, etc.) and the overall performance of the system. The project was completed on time and settlements of the finished embankment were within project requirements (i.e., less than 1 inch).