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F
fhwa.dot.gov
official
https://www.fhwa.dot.gov/engineering/geotech/pubs/nhi10024/nhi10024.pdf
Soil Slopes (RSS), Design and Construction Guidelines Manual which is an update of the current FHWA NHI-00-043, has evolved from the following AASHTO and FHWA references: C AASHTO LRFD Bridge Design Specifications, 4th Edition, 2007, with 2008 and 2009 Interim Revisions. C Earth Retaining Structures, by B.F. Tanyu, P.J. Sabatini, and R.R. Berg, FHWA-NHI-07-071 (2008). C AASHTO LRFD Bridge Construction Specifications, 2nd Edition, 2004, with 2006 Interim Revisions. C Geosynthetic Design and [...] Design and Construction Guidelines, by R.D. Holtz, B.R. Christopher, and R.R. Berg, FHWA HI-07-092 (2008). C Guidelines for Design, Specification, and Contracting of Geosynthetic Mechanically Stabilized Earth Slopes on Firm Foundations, by R.R. Berg, FHWA-SA-93-025, January 1993. C Reinforced Soil Structures - Volume I, Design and Construction Guidelines - Volume II, Summary of Research and Systems Information, by B.R. Christopher, S.A. Gill, J.P. Giroud, J.K. Mitchell, F. Schlosser, and J. [...] Guidelines, FHWA NHI-07-092 (Holtz et al., 2008) C Guidelines for Design, Specification, and Contracting of Geosynthetic Mechanically Stabilized Earth Slopes on Firm Foundations, FHWA-SA-93-025 (Berg, 1993) C Reinforced Soil Structures - Volume I, Design and Construction Guidelines - Volume II, Summary of Research and Systems Information, FHWA RD 89-043 (Christopher et al. 1990) C Mechanically Stabilized Earth Walls and Reinforced Soil Slopes, Design and Construction Guidelines, FHWA, (Elias
V
vulcanhammer.net
article
https://vulcanhammer.net/wp-content/uploads/2017/01/fhwa-nhi-00-043.pdf
This Mechanically Stabilized Earth Walls (MSE) and Reinforced Soil Slopes (RSS), Design and Construction Guidelines Manual which is a current update of FHWA SA-96-071, has evolved from the following AASHTO and FHWA references: !
Reinforced Soil Structures - Volume I, Design and Construction Guidelines - Volume II, Summary of Research and Systems Information, by B.R. Christopher, S.A. Gill, J.P. Giroud, J.K. Mitchell, F. Schlosser, and J. Dunnicliff, FHWA RD 89-043.
! [...] The following guidelines are recommended as the basis for specifications or special provisions for the furnishing and construction of reinforced soil slopes on the basis of pre approved reinforcement materials. Specification guidelines are presented for each of the following topics: (a) Specification Guidelines for RSS Construction (Agency design).
(b) Specifications for Erosion Control Mat or Blanket.
(c) Specifications for Geosynthetic Drainage Composite. [...] Specification Guidelines for Geosynthetic Reinforced Soil Slope Systems Description Work shall consist of design, furnishing materials, and construction of geosynthetic reinforced soil slope structure. Supply of geosynthetic reinforcement, drainage composite, and erosion control materials, and site assistance are all to be furnished by the slope system supplier.
E
epg.modot.org
article
https://epg.modot.org/index.php/321.1_Design_of_Earth_Slopes
For design of routine slopes without notable complications, the guidelines provided in Table 321.1 shall be used to select an appropriate maximum slope inclination based on the soil/rock types present at the specific site. These recommendations should be considered along with other factors that may influence the stability and performance of slopes in establishing final design recommendations. Factors such as presence or absence of structural foundations, adverse seepage conditions, [...] In the context of these guidelines, “design” of earth slopes generally involves selection of some combination of the following to produce a final slope that will satisfy performance requirements:
: 1) Slope geometry to include slope inclination, slope width, and slope height,
: 2) Slope materials to include selection of fill materials for embankments,
: 3) Materials and methods to provide for appropriate drainage of surface and/or groundwater, [...] The remainder of these guidelines is organized into three different sections. EPG 321.1.1 describes general requirements and limits for earth slopes that can be considered routine. The majority of slope designs will be established based on the provisions in this section. EPG 321.1.2 describes provisions that apply for special slope stability problems to include design of remedial measures for sites where slides have occurred, evaluation and design of relatively large embankments on soft soils,
F
fdotblob.core.windows.net
article
https://fdotwww.blob.core.windows.net/sitefinity/docs/default-source/roadway/…
in the APL for each approved geosynthetic product. 263.6 Geosynthetic Reinforcement Design Guidelines These design guidelines are excerpted from the FHWA Publications (a) FHWA GEC 011 (FHWA-NHI-10-024 & FHWA-NHI-10-025), "Design and Construction of Mechanically Stabilized Earth Walls and Reinforced Soil Slopes-Volumes 1 & 2", and (b) No. FHWA HI-95-038, "Geosynthetic Design and Construction Guidelines". Designers should refer to these publications for further details. (1) Reinforced Slope - see [...] Topic #625-000-002 FDOT Design Manual 263-Geosynthetic Design 263 Geosynthetic Design 263.1 General This chapter provides design guidance for geosynthetic reinforced soil slopes and geosynthetic reinforced foundations over soft soils. “Geosynthetic” is a generic term for all synthetic materials used in Geotechnical engineering applications and includes geotextiles and geogrids. Reinforced soil slopes should be utilized only when unreinforced slopes are not appropriate and retaining walls are not [...] Step 11. Establish construction observation requirements. Use instrumentation such as settlement plates, piezometers, and/or inclinometers to monitor the performance of the construction. Establish the monitoring criteria, such as the maximum rate of piezometric and/or settlement change that must occur before the next stage of construction can proceed. January 1, 2021 6 Topic #625-000-002 FDOT Design Manual 263-Geosynthetic Design Figure 263.6.1 Geosynthetic Reinforced Soil Slopes Notations: H =
O
onlinepubs.trb.org
article
https://onlinepubs.trb.org/Onlinepubs/sr/sr176/176-008.pdf
slopes. Runoff from normal rainfall may cause a sufficient increase in seepage forces to initiate movement within talus slopes. Recogni-tion of talus slope forms is important in the predesign pro-cess; such slopes should be avoided during construction un-less other alternatives are not available. If talus slopes must be disturbed by construction activity, careful analysis should consider the benefits of internal drainage to control potential slope movements that may be triggered by the buildup [...] design and the consequences of failure, the reasonableness of re-ducing the safety factor can be established. In highway en-gineering, slope designs generally require safety factors in the range of 1.25 to 1.50. Higher factors are required if there is a high risk for loss of human life or uncertainty re-garding the pertinent design parameters. Likewise, lower safety factors can be used if the engineer is fairly confident of the accuracy of input data and if good construction con-trol can be [...] design for slope stability involves one basic principle: to provide sufficient dead weight or artificially reinforced restraint near the toe of the unstable mass to prevent movement. Stability anal-yses based on the unretained slope geometry and available soil shear strengths predict the forces tending to cause movement and those that exist within the soil mass to re-sist the movement. A buttress design provides an additional resistance component near the toe of the slope to ensure an adequate
S
solmax.com
article
https://www.solmax.com/ca/en/blog/what-are-the-key-considerations-in-designin…
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 [...] When employing geosynthetic materials, ensuring UV stability is crucial for long-term effectiveness, especially in environments with significant exposure to sunlight. Structures with a design life greater than three years, as recommended by FHWA guidelines, should use UV-stable materials to prevent degradation over time. In vegetated structures, where vegetation might provide some protection from UV light, the use of UV-stable facing is still recommended to safeguard against areas where [...] 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
R
rosap.ntl.bts.gov
official
https://rosap.ntl.bts.gov/view/dot/48689
by V Elias · 2001 · Cited by 787 — Mechanically Stabilized Earth Walls and Reinforced Soil Slopes: Design and Construction Guidelines (Updated Version) ... Please click the download button to view
R
rosap.ntl.bts.gov
official
https://rosap.ntl.bts.gov/view/dot/75060
by V Elias · 1996 · Cited by 787 — This manual was prepared to enable the engineer to identify and evaluate potential applications of MSEW and RSS as an alternative to other construction methods