Project Showcase- Repairing Yi-Lan-I Road in Taiwan

In this article the authors describe an overview of improvements made on Taiwan’s Yi-Lan-I Road which provides access to the country’s National Taipingshan Forest Recreation Area. Being at a high elevation with steep, sheer surfaces, as well as in an area with copious amounts of rain, the Yi-Lan-I Road is fraught with landslides, leaving roads in need of reinforcement. The project, which took place over the course of 60 days, consisted of a number of steps to reinforce the local geology, including the laying of geogrids of multifilament polyester yarn and coated with PVC as well as a drainage system comprised of filter fabric, geopipe, and fill. Vegetated soil bags were laid on top of the completed reinforcement system. The authors note that engineers encountered difficulties in finding the type of granulated soil stones typically used in projects of this sort due to the lack of such stone in local naturally occurring geology.


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  • Accession Number: 01095710
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Apr 24 2008 1:46PM