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Filter Fabrics in Shore-Protection Structures: Save Money, Ease Installation

by Eugene E. Dallaire, Assoc. Editor; Civil Engineering Magazine, New York, NY 10017,


Serial Information: Civil Engineering—ASCE, 1977, Vol. 47, Issue 3, Pg. 74-79


Document Type: Feature article

Abstract:

Over the past decade, plastic filter fabrics have seen growing use in shore-protection structures (e.g. revetments, breakwaters, jetties), river-bank protection schemes, and other areas where water comes into direct contact with soil. In a typical application, the filter fabric is laid directly on top of the soil to be protected, and rip rap, concrete blocks, or some other form of armor protection laid on top. The fabric prevents water from gouging out the soil from behind the armor, a process that would result in the inward collapse of the embankment-protection structure. Three main factors have spurred the growth of the fabric: a possible cost savings, because the fabric is often cheaper than the granular filter it replaces; easier installation; and greater reliability. Here then are a number of case histories explaining where and why the fabric was used and how well it has performed.

Subject Headings: Filters | Fabric structures | Coastal protection structures | Fabrics | Soil water | Shores | Concrete blocks

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