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Please look at the information and related sources for Geosynthetics below, or, post a
question in the Geotechnical Forum.
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areas of geotechnical engineering.
Geosynthetic Publications Available for Downloading
FHWA NHI-00-044 - Corrosion/ Degradation of Soil Reinforcements for Mechanically
Earth Stabilized Walls and Reinforced Soil Slopes. Discusses corrosion of metals,
corrosive soil environments, geosynthetic durability and degradation, monitoring and testing
for soil reinforcements.
FHWA
RD-97-142, 143, 144, and 00-157 - Durability of Geosynthetics for Highway
Applications. This research document was intended to predict long-term strength loss of
geosynthetic tensile capacity, primarily for mechanically stabilized earth (MSE) retaining
walls, reinforced soil slopes and foundation applications.
NAVFAC 7.01 -
Soil Mechanics. This publication includes soil/ rock identification and properties,
field exploration, field testing, instrumentation, laboratory testing, distribution of
stresses, settlement analysis, volume expansion, seepage, erosion control, drainage filters,
slope stability and slope protection.
USACE TL 1110-1-189
- Use of Geogrids in Pavement Construction. Manual for utilizing geogrids
in all types of flexible road and airfield design. Includes design examples for gravel and
flexible pavement roadways.
USACE TL 1110-2-286
- Use of Geotextiles Under Riprap. Includes general guidance of bedding,
preparation equipment and placement of geotextiles under riprap. Also, includes provisions for
groundwater and surface water.
Geosynthetics Technical Guidance
Geosynthetics are sometimes separated by two specific categories: geofabrics and geogrids. Other related
synthetics, or symantics are geotextiles, geomembranes and geonets. Sometimes, geosynthetics are necessary for a particular
design, beneficial by increasing the design life, reducing future maintenance costs, or reducing construction costs. Basically,
geosynthetics are used as filtration, drainage, separation, reinforcement, and erosion/ sediment control.
Geofabrics are woven or non-woven. Woven geofabrics may be utilized to separate engineered fill
from fine soils by preventing the infiltration of fine soils into the fill. Applications include preventing fine soils in a road base coarse material,
preventing fines from clogging drain pipes, or used as fencing to reduce sedimentation and erosion.
Geogrids can be utilized to increase the strength, stability, and reinforce engineered fill. Geogrids are sometimes used to increase the
structural number in a pavement analysis when the road subgrade is composed of soft compressible soils. Other applications include
reinforcement for Mechanically Stabilized Earth (MSE) designs.
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