DOI

10.5703/1288284313467

Report Number

FHWA/IN/JTRP-97/06

Abstract

Over the past few years, the INDOT new materials department has received numerous erosion control products (mostly geosynthetics) to evaluate as alternatives to riprap and concrete in ditch liners. Potential benefits include lower construction costs and better aesthetics over current products. Unfortunately, no specification, design methodology, or classification system currently exists for these erosion control blankets.

In this project's phase I, existing information and knowledge on erosion control materials used to line highway side drainage ditches were investigated. From the available technical1iterature (journal and conference publications, other DOTs specifications, manufacturer documentation, independent test laboratory test data), design methodologies, classification system, product approval procedures, and installation methods were reviewed for temporary and permanent geosynthetic erosion control materials. Based on the synthesis of these reviews a design methodology was proposed including design aids (tables, flow charts, and graphs) necessary to perform flexible liner computations. A classification system based on product performance was also proposed. In addition, current design procedures for hard armor materials (fabric formed revetments, concrete block systems, gabions, and riprap) were reviewed. A tentative specification for both flexible and hard armor ditch liners was drafted.

Keywords

geosynthetic erosion control products, hard armor materials, riprap, fabric formed revetments, gabions, concrete block systems, straw blankets, excelsior blankets, erosion control and revegetation mats, turf reinforcing mats, SPR-2132

SPR Number

2132

Project Number

C-36-15M

File Number

6-9-13

Performing Organization

Joint Transportation Research Program

Publisher Place

West Lafayette, IN

Date of this Version

1997