8 results ·
● Live web index
L
library.ctr.utexas.edu
research
https://library.ctr.utexas.edu/hostedpdfs/tsusm/0-6792-1.pdf
Geotextile Design Method: Static and seismic slope stability analysis. Construction Sequence: The installation of wire mesh was found to be straightforward. This ensured that the construction tolerances required for the face were easily met and the work was completed within the tight construction period. Polyamide matting was used a surface erosion control blanket at the toe of the slope and geotextile was used as a separator between the rock facing and the reinforced backfill. Cost [...] recommended the use of geogrid or a combination of geogrid and geotextile for slope reinforcement, while the others recommended independent use of geotextile. Some prefer high strength geotextiles over geogrids, as they provide a separation function and can be more cost effective in certain cases. Figure 2. Recommended Design Methods. The internal stability of a soil slope can be determined by four basic factors, including the slope angle (β), soil weight (W), cohesion (c), and internal [...] a safety plan to be implemented concerning potential hazards. The contractor also recommends geogrid for reinforcement of soil slopes and geotextile or geonet for the top. By taking adequate safety measures and utilizing sufficient materials and construction methods, there is no maintenance or repair that should be expected. Reinforced soil slopes constitute a viable solution when compared to alternatives; however, the cost of the material varies depending on the quantity and performance
G
geosyntheticsmagazine.com
article
https://geosyntheticsmagazine.com/2010/08/01/green-geosynthetic-reinforced-so…
The landslide resulted because of the saturation of the soils due to the intense and nearly nonstop rain of the previous months. As a solution to the landslide, the proposal was to construct a geotextile-reinforced soil slope with a facade of vegetation, using the green wall methodology. [...] For these types of projects we have developed a system for building green walls or slopes—geotextile-reinforced soil slopes that have a uniform covering of vegetation on their facade to give a natural appearance. The resulting slope is attractive and as strong and robust as traditional solutions that use concrete, block, or stone facades. [...] Geosynthetic-reinforced soil walls or slopes are also attractive solutions because of the flexibility they provide, as their design can be adapted to suit a range of different loads, solicitations, geometries, landscape features, and environments. Increasingly urban housing complexes and new tourist developments are emphasizing ecological awareness and care for the environment in their construction, and geosynthetic-reinforced soil walls are used because they meet the construction goals.
M
mdpi.com
article
https://www.mdpi.com/2076-3417/9/10/2008
For soil slope applications, Alabama Department of Transportation (DOT) specifies that the geosynthetic reinforcement (either geogrid or geotextile) shall be constructed of polyester, polypropylene, or polyethylene, resistant to all naturally occurring alkaline and acidic soil conditions, and resistant to heat, ultraviolet light, and to attack by bacteria and fungi in the soil . Reinforcement for soil slopes shall be any geosynthetic whose strength in the machine direction equals or exceeds the [...] It is also recommended that the polyester, polypropylene, or polyethylene’s constructed geotextile or geogrid should be used in reinforcing deep slopes. The materials should have characteristics such as heat resistance, ultraviolet resistance, and fungi and bacteria attack resistance, as well as resistance to alkaline and acidic soil conditions. [...] Geosynthetics are modern materials used to improve soil conditions by providing tensile resistance and stability. In the case of soil reinforcement, a primary application of geosynthetics involves reinforcing steep slopes. With the use of geosynthetics, the construction of reinforced steep slopes is often more affordable and technically feasible when compared to traditional construction techniques . Furthermore, geosynthetic reinforcement is a cost-effective solution for stabilizing recurring
D
damsafety.org
article
https://damsafety.org/reference/reinforced-slopes-using-geotextile-fibers-com…
of slopes. This combination of geosynthetics has the potential to virtually eliminate any significant future maintenance problems due to raveling and mini-failures at the slope face, for properly designed reinforced embankments. Brief case histories of slopes constructed using fiber-reinforced soil, and design examples using high-strength geotextile - fibers composite are discussed. [...] Within the past seven years, short geosynthetic fibers ( Geofibers have been successfully used on more than 25 slope projects in the United States. These projects have involved repairs of shallow slope failures, repair of deepseated slope failures, and veneer reinforcement in new slope construction to reduce future maintenance costs. These fibers also have tremendous potential for use as veneer and secondary reinforcement in geotextile - fibers composite reinforcement of slopes. This [...] Planar geosynthetics such as high-strength geotextiles and geogrids have been in widespread use as earth slope reinforcement for more than a decade. The use of these materials in slope applications has been highly successful. Common practice has been to provide primary reinforcement in discrete layers throughout the reinforced zone, with shorter, intermittent layers of the planar reinforcement placed between the primary layers at the slope face to act as secondary reinforcement. The primary
C
cherokeemfg.com
article
https://cherokeemfg.com/reinforced-soil-slope-walls-rss-walls-installation
When building a reinforced slope, we will primarily depend on a secondary reinforcement with a light to moderate geosynthetic fabric or grid in tight vertical spacing with relatively short embedment lengths (how far horizontally into the slope these extend). These layers will provide superficial stability to protect the embankment from shallow plane failure at the surface, while also giving compaction equipment a good platform in which to compact soil lifts all the way to the face of the slope. [...] A reinforced soil slope is defined as a compacted fill embankment that incorporates geosynthetic reinforcement to increase the soil shear to enhance the stability of the embankment when site conditions require an embankment with a steeper angle of repose (how steep soil can naturally be piled relative to a horizontal plane) or if the embankment is intended to carry a load considered unstable with the existing subgrade. [...] Place reinforcement beginning at the face of the slope and moving toward the end of the fabric or grid to ensure geosynthetic is pulled taught being careful to prevent wrinkles, folds, or tears. If wire baskets are used, they will also be placed at the indicated location prior to fill placement, leaving enough geosynthetic to wrap the face and make the next geosynthetic embedment length on the subsequent lift. If geosynthetic is to terminate at the face of the slope, you will line the wire form
S
scdot.org
article
https://www.scdot.org/content/dam/scdot-legacy/business/pdf/geotech/2022-by-c…
material for the connection, should be shown on the plans. In addition, the plans should also include a requirement for the Contractor to provide the results of testing of the mechanical connection. When geotextiles are used as the extensible reinforcement, the geotextile shall be placed so that the strong axis is perpendicular to the face of the RSS. The geotextile reinforcement materials to be used to construct an RSS shall meet the criteria provided in STS SC-M-203-3 (latest version) for [...] (see ASTM D6193 – Standard Practice for Stitches and Seams). Use 150 to 400 stitches per yard depending on the weight of the geotextile. The GEOR should consultant with a geotextile manufacturer or supplier to determine the appropriate stitch density. Use either a “butterfly” seam (Type SSd) or “J” seam (Type SSn) (see ASTM D6193). Geotextiles may be overlapped in the transverse direction. The minimum overlap shall be 12 inches. If a sewn seam in the cross machine (i.e., transverse) direction [...] Method for Strength of Sewn or Bonded Seams of Geotextiles) in machine direction. Prior to using a sewn seams obtain written permission from the OES/GDS. For sewn seams use thread that consists of either polypropylene or polyester polymers and which has a strength matching the strength of the geotextile being seamed. Do not use nylon thread. Use thread that is of contrasting color to that of the geotextile itself. Use a double row of double-thread chain stitch, Type 401 (see ASTM D6193 –
S
solmax.com
article
https://www.solmax.com/ca/en/blog/what-are-the-key-considerations-in-designin…
Geosynthetic materials, including geotextiles and geogrids, play a versatile role in RSS, enhancing structural support, facilitating drainage, and supporting vegetation growth. These synthetic solutions bridge the gap between soft and hard facing options for reinforced slopes, offering tailored reinforcement that meets specific site requirements. They are particularly valuable in environments subjected to dynamic weather conditions and hydraulic pressures, where traditional materials might fail [...] Reinforced slopes that are 1(H): 1(V) and steeper typically require additional facing support during construction. A geosynthetic face wrap and/or a hard armor facing support system is often employed in these scenarios. Particularly when constructing slopes with materials like silts and poorly graded sands and gravels, or in environments subjected to external erosive forces such as mild water currents and/or wave attack, robust facing supports are essential. Temporary supports such as wooden [...] Reinforced soil slopes (RSS) stand as a cornerstone in modern geotechnical engineering, offering robust solutions for constructing slopes with inclinations less than 70 degrees from the horizontal. These structures are pivotal in combating erosion, facilitating vegetation growth, and ensuring the stability of steepened terrain. The general facing systems deployed in these constructions can be broadly classified into two types: soft or vegetated and hard armored systems, which may or may not
C
cdn.glenraven.net
article
https://cdn.glenraven.net/geogrid/pdf/en_us/StrataSlope_Reinforced-soil-slope…
it was shown that the use of horizontally placed geosynthetic reinforcement to stabilize surficial soils in slope applications is a commonplace procedure. For steep reinforced slopes, for example, relatively short secondary reinforcement layers are placed between the primary reinforcement to provided stability to the surface soil during and after construction to help with the growth of vegetation. ANALYSIS The cross section in Figure 17 illustrates a typical steep slope arrangement with geogrid [...] One approach to the design of reinforced soil slopes is to determine the required strength of reinforcement by means of detailed limit equilibrium analysis methods such as the Bishop modified method. The Bishop modified method of analysis can be extended to include the effect of tensile reinforcement. When a failure surface intersects a reinforcement layer, an additional resisting moment is added to the overall moment of equilibrium. A model for a rotational slip surface is presented in Figure [...] provisions. 3.2 CONSTRUCTION A. Construct reinforced soil structure in accordance with the approved shop drawings and Construction and Quality Control Manual supplied by the manufacturer. B. Geogrid placement: 1. Unroll the geogrid and cut to the length indicated in the approved shop drawings. 2. Place geogrid on level and compacted reinforced fill at locations indicated in the approved shop drawings. 3. Primary strength direction of the geogrid shall be placed perpendicular to the face of the