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| Publication Type:
| Report |
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| Author(s): | Vaughn, Peter L.;
Howard, Terry |
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| Author Affiliation: | Vaughn: National Sales Manager for BonTerra America, Inc. ; Howard: Professional Engineer with Howard Consultants, Inc. and Professor of Geological Engineering at the University of Idaho. |
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| Title: | Frost shear reduction on severe slopes in the Pacific Northwest using high strength organic geotextiles |
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| Meeting Info.: | Reno, NV: February 15-18, 1994 |
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| Source: | International Erosion Control Association Proceedings 25:Sustaining Environmental Quality: The Erosion ControlChallenge. February 1994, p. 247-257. |
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| Publishing Information: | Steamboat Springs, CO: International Erosion Control Association |
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| # of Pages: | 11 |
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| Keywords: | TIC Keywords: Shear resistance; Geotextile fabrics; Frost; Polypropylene covers; Erosion control
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| Geographic Terms: | Pacific Northwest |
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| Abstract/Contents: | "The phenomena of frost shear often destroys erosion control efforts in the Pacific Northwest. This problem cannot be adequately addressed by the application of erosion control measures such as hydroseeding with a tackifier, or application of erosion control blankets. Usually occurring during a mid-winter thaw, frost shear causes untreated surface soils to slide. The exposed soil is then subject to further surface and rill erosion during spring runoff. In 1992 construction of the Wal-Mart store in Moscow, Idaho, resulted in the formation of 1:1 slopes in loess soils comprised of Series 33 Neff Palouse Silt Loam and Series 35 and 36 Palouse Silt Loam soils (U.S. Soil Conservation Service Soils Report). Typically, these soil types are prime candidates for frost shear. In the fall of 1992, the site was treated with seeded erosion control blankets manufactured of 30% coconut fiber and 70% straw mulch, sewn with high strength polypropylene thread between layers of biaxially oriented polypropylene netting. Erosion control blankets provide erosion protection and create a suitable humus bed for seed germination. To reduce the potential of frost shear, half of the project was overlaid with high strength coir engineering fabric, using 12" metal staples for anchor pins. Control sites treated with the seeded coconut/straw blanket, but not treated with the high strength coir engineering fabrics failed due to frost shear during the winter of 1992-93. However, failure did not occur on slopes treated with the seeded coconut/straw blankets overlaid with high strength organic geotextile. In the spring of 1993 high strength coir engineering fabric was installed on all project slopes not treated in 1992." |
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| Language: | English |
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| References: | 4 |
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| Note: | Pictures, b/w
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Vaughn, P. L., and T. Howard. 1994. Frost shear reduction on severe slopes in the Pacific Northwest using high strength organic geotextiles. Int. Erosion Control Assoc. Proc. p. 247-257. |
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MSU catalog number: S 622.2 .I58 1994 |
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