Soil nail analysis program snap2 update announced by the. Prior to stressing soil nail test anchors, the contractor shall furnish the engineer certified copies of load calibration curves for all jacks and gauge systems to be used in the work. Below is a brief comparison of some of the features. As the bond strength is mobilized, tensile forces in the nail are developed.
Soil nail design requires carefull consideration of many parameters. Snail plus soil nail analysis software geotechnical. Along with inhouse spreadsheets, rocksol utilizes slopew, soilworks, snap soil nail analysis program, snailz, and msew to assist with retaining wall foundation design. Soil nail design, soil nail wall design with deepex. Soil nail analysis program snap yeh and associates, inc.
The fhwa national geotechnical team has announced an update to the soil nail analysis program snap2, a geotech software that follows the current fhwa guidelines for designing a soil nail earth retaining structure. Existing and final grade profiles in front of and behind the wall. The following information is to be shown on the plans. Calculations are based primarily on two fhwa publications. Slope checks a range of slip circles and gives you the option to force slips through a point or. Typical applications include railway embankments and road widening projects. The software follows the fhwa methodology for the design of. Constructing a soil nailed wall involves reinforcing the soil as work progresses in the excavated area by the introduction of passive bars, which essentially work in tension. Research evaluation of design methodologies for soil. While soil nailing is also available in our deepxcav software program, snailplus was created to bring all the necessary capabilities into one package. Please see the tutorials for more detailed information. Multiple slope angles including two slopes below wall. Calculate the factor of safety for embankment slopes, including piles, tiebacks, soil nails and reinforced soil masses. Snailplus is a powerful soil nailing wall analysis and design software program.
It addresses the following issues identified in previous versions. Subsurface conditions are characterized to evaluate external stability, including bearing resistance, sliding, overturning, global stability, and settlement. These walls are used to support steep cut slopes and widening under bridges. This video presents an introduction on how you can generate a soil nail wall model with our soil nailing software snailplus 2015. The software follows the fhwa methodology for the design of soil nail walls, in an interactive environment built on the deepxcav basic layout. Condor projects can manage all elements of bank stabilisation projects including, design, supply, installation and testing. The software follows the fhwa methodology for the design of soil nail walls, in an interactive environment built on the deepex basic layout. Fhwasa96069r, and 2 geotechnical engineering circular no. Slope stabilization software packages, including soil nail analysis program snap20 and rockery wall program. However, i believe that the current version does not handle multiple soil layers and therefore may be of limited value. Geotechnical engineering rocksol consulting group inc. Soil nail design, soil nail design software with deepxcav.
Equivalent plates smeared soil nail for 2d finite element analysis ann, 2004 while the soil nail bars were modeled using beam elements with three degrees of freedom. Soil nailing is an inplace reinforcement of the soilrock that utilizes steel tendons grouted into drilled holes to create a stable block. Lodex engineering announces groundbreaking achievement in. Version 3 of the soil nail analysis program snap2 has recently been released by the fhwa. You can specify water pressure, material shear strength, surface loads and horizontal ground acceleration. Comparative evaluations of seven soil nail wall design computer programs are described and analyzed. Soil nailing for slope stability maccaferri canada. Soil nailing is used to provide costeffective short or longterm ground stabilisation for roadway cut excavations, slope stabilisation or retaining wall support. The technology of soil nailing and ground anchors were developed mainly by constructions. With many nail salon software providers, you wrap your operations around the way their software does things, but at salon iris, were focused on you. Nailed slope is an intuitive program for soil nail wall design.
The course takes a projectoriented approach whereby the soils input to a bridge project is followed from conception to completion. Soil nail installation process posted by sinorock date 20160414 category industry news leave a reply soil nail is installed in complicated geological conditions in various construction projects, such as weak surrounding rock, fault fracture zone, high geostress, large deformation and other common types of complex geological conditions. Last, snailplus is the only software that produces a full. Performance of hybrid msesoil nail walls using numerical. The fhwa does not provide user assistance or support for this software. Soil nutrients for agricultural productivity organizations, technology. The resolution of the search area when working at different scaling factors.
The nailsoil interface shear resistance is an important parameter in design of soil nailed structures. Snap looks like a good program to design sn walls according to fhwa criteria. Snailplus analyzes soil nailing walls according to fhwa design standards and. Snail plus soil nailing software is a program for the design and analysis of soil nail walls according to fhwa standards. Soil nail question earth retention engineering engtips. Soil nail head construction quality control of soil nail. Soil nailing is a technique that can be used either on natural or excavated slopes, where the slope is reinforced by the insertion of tendons.
Pdf issues and aspects of soil nailing researchgate. Linkpage citation the federal lands highway division flit of fhwa recently released a software program for evaluating and analyzing soil nail walls for temporary cut excavations and permanent slope stabilizations. The technique of soil nailing has been increasing its popularity among contractors because it offers an effective and costeffective retaining system for a variety of ground. I spoke to one of the authors who told me that they are going to update the program to handle multiple layer but havent done so yet. Soil nails excavate soil drill hole install and grout nail images test selected nails place reinforcement place shotcrete finish shotcrete install soi. This means that you can include all intermediate construction stages for your soil nail wall, include 3d loads, all in an interactive environment. The slope in front of the retaining wall shall be removed in lifts.
Ref1 relies heavily on the software program snail to determine both active earth. National highway institute national highway institute. Compressive strength test for harden grout flow cone test. A threedimensional finite element model was established and used for simulating soil nail.
The software in general is very good and ties in well with the way we do things here. The software follows the fhwa methodology for the design of soil nail walls, in an interactive environment. This course is geared toward practicing design and construction engineers who routinely deal with soil and foundation problems but have little theoretical background in soil mechanics or foundation engineering. The fhwa national geotechnical team has announced an update to the soil nail analysis program snap2, a geotech software that follows. Slopew can effectively analyze both simple and complex problems for a variety of slip surface shapes, porewater pressure conditions, soil properties, and loading conditions. Quality control of soil nailing and ground anchors. Version 3 of the soil nail analysis program snap2 addresses the following issues identified in. This essential slope software analyses reinforcing elements such as soil nails, rock bolts, ground anchors and geotextiles to bs8006bs8081. Allows more user options for selecting colors within the software. Slope stabilization software packages, including rockery wall and soil nail wall snap design. This program is used to design soil nail walls and slopes of various shapes.
Layers can be inclined but cannot cross within prescribed search limits. Test anchors shall be performed as required on the plans. Snailz is a program for soil nail reinforced slope analysis. Slope stability analysis slopew is the leading slope stability software for soil and rock slopes. Soil nails and anchors ground anchors have a range of applications in civil engineering and building projects. This gec aims to serve as the fhwa reference document for highway projects involving soil nail walls. Snailplus 2015 soil nailing analysis software youtube. Version 3 of the soil nail analysis program snap2 addresses the following issues identified in previous versions. Elevation view of the soil nail wall including payment limits. The nails address the global slope stability, which are connected in turn to a facing system which provides surficial stability. Shotcrete, reinforced with wire mesh andor reinforcing steel, is applied to the face of the excavation to secure the soil between the nails. We design nail salon software thats practical and geared toward the realities of everyday business, so you can create an.
Snailplus analyzes soil nailing walls according to fhwa design standards and methodologies. Soil nail analysis program snap2 update announced by. The program provides a full calculation output, with printable equations that can be verified, that includes the facing design and other performed checks. Snap soil nail analysis program evaluates the internal facing and nail components of a soil nail wall, external stability, and global stability. The performance evaluations of the available programs snail, nailsolver, stars, nailm, goldnail, talren, and colduim were accomplished by conducting a number of example analyses.
Development program, produced the soil nail analysis program snap as a basic. Snap soil nail analysis program users manual yumpu. The depth of each lift shall be limited to the amount necessary to install a single horizontal row of soil nails. To download the snap software and users manual fhwacfltd4 at no.
They include supporting some bored pile retaining walls, stabilising rock faces, tunnel portals and marine structures, such as dock walls. Snap2 software for the design and analysis of soil nail walls. Ten hypothetical cases and five case studies used in the analyses represented common. Summit peak technologies has been developing the soil nail analysis program snap since 2007 in cooperation with fhwa. Snail plus soil nail analysis software software by deep excavation llc snail plus is our soil nail analysis software.