The influences of the cohesive force, adhesive force, and the fill surface form were considered in this method. Earth pressure software free download earth pressure. Use this simple earth pressure coefficient calculator to find the earth pressure coefficients ka or kp for the active. Foundation engineering lateral earth pressure lateral earth pressuretheories two theories are used to calculate lateral earth pressure active and passive. Structural design software collection structural design spreadsheets. Soils by the nature of gravity exert both vertical and lateral earth pressures.
Lateral earth pressure is related to the vertical earth pressure by a coefficient termed the. Foundation engineering lateral earth pressure as shown in figure above, there are three types of lateral earth pressure lep. Lateral earth pressure represents pressures that are to the side horizontal rather than vertical. The point of application of the active earth pressure is also obtained. Analysis of lateral earth pressure is one of the basic tasks that a geotechnical. Earth pressures is an intuitive program used to calculate earth pressures active, passive, at rest acting upon an arbitrary structure. Lateral earth pressure geotechnical problem solving.
Wallpres wall pressure analysis program description. Berrak teymur retaining walls are usually built to hold back soil mass 1. Lateral earth pressures and retaining walls assistant prof. Earth pressure analysis software lateralk lateralk is a simple software for calculating lateral earth pressure coefficients and forces behind retaining walls in. Lateral earth pressure is the pressure that soil exerts in the horizontal direction.
Request pdf seismic lateral earth pressure coefficients for c. Active pressure is the limiting condition in which the earth exerts an outwards force stress on a retaining system and the members tend to. Earth pressure forces can be atrest fig a, active b or passive c. Software development for the analysis of lateral earth pressure. The effective stress is the intergranular stress calculated by subtracting the pore pressure from the total stress as described in soil mechanics. Earth pressure and retaining wall basics for nongeotechnical engineers 2012 instructor. Sample calculations for lateral earth pressures are provided in section 7. Shoring design, lagging design, and lateral soil pressure analysis tools are combined into one powerful, userfriendly application. Cantilever reinforcement reinforcement counterfort 4. Lateral earth pressures are the primary driving factor in the design of retaining walls.
Structural design software provides software created using microsoft windows excel 201020 or 2016 office 365. Easy to use earth pressure analysis software lateralk. Soilstructure rapid retain software has the following unique capabilities. In rigid earth retention systems, lateral earth pressure is generally assumed to be constant along the length of the wall.
The effective stress is the intergranular stress calculated by subtracting the pore pressure from the total stress as described in. Also, a computer program has been written in matlab software environment. Based on the sliding plane hypothesis of coulumb earth pressure theory, a new method for calculation of the passive earth pressure of cohesive soil was constructed with culmanns graphical construction. Fhwa apparent earth pressure diagrams fhwa apparent earth pressure diagrams are prescribed by the federal highway administration for design purposes of vertical flexible retaining walls for transportation projects. You can choose to apply seismic force from lateral earth pressure andor from wall selfweight. Lateralk by novotech software is a unique, simple geotechnical software, easy to use. Loads and forces acting on retaining wall and their. Figure 11 shows the lateral active earth pressure distribution along the height of a translating rigid wall for the various widths of backfill the value of b is in the range from 1. This produces lateral earth pressure behind the wall that is subject to the angle of internal friction phi and the cohesive strength c of the retained material, along with the direction and magnitude of movement. Determination of the lateral earth pressure is a problem that must consider the lateral soil strains that develop in the soil mass. Retaining and sheetpile walls, both braced and unbraced excavations, grain in silo walls and bins, and earth or rock contacting tunnel walls and other underground structures.
For instance a retaining wall can be used to retain fill along a slope or it can be used to. Download geotechnical engineering software re shoring wall 2017 developed by restrained earth llc. You will need to incorporate uniform surcharge, point, line, seismic and strip loads and then add them to your active or at rest earth pressure profile. Many jobs are too complicated for a simple excel spreadsheet calculation and need more sophisticated analyses for multilayer stratigraphy, water level effects, and so on. Fhwa apparent earth pressure diagrams deep excavation. The software are nice and easy on all win tablet pad. On this basis, the calculation formulas of active earth pressure, seismic active earth force, total moment at the wall and the point of application of active thrust from the base of wall were acquired by solving this balance equation. Lateral earth pressure civil pe exam study material. Calculation of lateral earth pressures by exclusive use of active earth pressure coefficients or by use of an equivalent fluid pressure of 30 pounds per cubic foot can lead to problems. Rankine equation for static condition, including active and passive earth pressure coefficients ka, kp, plus atrest coefficient ko. This equation, which derived by william rankine, is the development of coulomb formula.
Earth pressure software free download earth pressure top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Earth force calculation, coulombs equations earth force calculation, general wedge method earth pressure calculations including wall. Download geotechnical engineering software lateralk 4. Calculation of earth pressure on rigid retaining walls. Bearing capacity, plate load test and pressuremeter test. Wallpres is a spreadsheet program written in msexcel for the purpose of determining the horizontal lateral pressures to be applied to walls from various types of loading including lateral earth pressure, hydrostatic pressure, as well as uniform, point, line, and strip surcharge loadings. We will briefly discuss lateral earth pressure caused by soil weight and ground water effects. Counterfort strectcher headers filled with soil face of wall 5. Since a restrained wall cannot tilt away from the soil to mobilize its shear strength, the active pressure cannot be developed. The ratio of horizontal to vertical stress is called coefficient of lateral earth pressure k.
Active and passive earth pressures are the two stages of stress in soils which are of particular interest in the design or analysis of shoring systems. Then, based on the limit equilibrium method with the obtained slip surfaces in pfc 2d, a simplified analytical method is presented to obtain a solution of the active earth pressure acting on rigid retaining with narrow backfill width. Typical range of lateral earth pressure coefficients. Seismic earth pressure calculator nyu web publishing. Lateralk is a simple geotechnical software for calculating lateral ear. This program is a retaining wall design software that combines geotechnical checks and structural design calculations as one complete treatment of stem wall design. Retaining and sheetpile walls, both braced and unbraced excavations, grain in silo walls and bins, and earth or rock contacting tunnel walls and other underground structures require a quantitative estimate of the lateral pressure on a structural member for. Structural design software collection structural design. Retaining wall lateral earth pressure how to engineer. Lateral earth pressure spreadsheet earth retention. Earth pressure coefficients calculator software by thegeoexpert open software link. Structural engineering software, spreadsheets, for analysis and design, including wood, lateral analysis, concrete, steel, aluminum, glass, masonry, bridge, foundation. Each spreadsheet contains formulas, reference code sections, and graphic drawings.
A geotechnical short course on slope stability, lateral earth pressure and deep excavation with application of geo5 softwares 2426 june 2015 by gouw tjieliong ir. In the present study, the slip line program slip developed by cheng and au. Earth pressure is the force per unit area exerted by soil. Lateral earth pressure on lagging in soldier pile wall systems. The initial lateral earth pressure of soisl in nature have an insitu state of stress commonly refered to as atrest conditions typically refered as ko. In soldier pile and lagging systems, the lagging is often considerably less stiff than the steel soldier piles. The rankine method of lateral earth pressure calculation. Design diagrams for the analysis of active pressure on retaining. Geoep is the most flexible lateral earth pressure calculation program for calculating static and seismic earth pressures for various surface configurations. Various earth pressure theories absi, sokolovski, mullerbreslau, mazindrani, caquotkerisel. Lateralk is a simple software for calculating lateral earth pressure coefficients and forces behind retaining walls in static and earthquake condition based on. Lateral earth pressure calculation geoep geoadvanced. Download excel based calculation sheet for designing.
The coefficient of lateral earth pressure, k, is defined as the ratio of the horizontal effective stress. Finding the earth pressure coefficient calculation a bit tedious. There is no direct way to model earth pressures in ram ss. This category is used to specify whether seismic lateral earth pressure is to be considered or not. Bell 1915 has further developed rankines equation to handle cohesive soils. Lateral earth pressure software lateralk novo tech. Structural design software engineering international. Total lateral pressure from clay soil when hydrostatic pressure is also present. Re shoring wall shoring design, lagging design, and. Lateralk is a simple geotechnical software for calculating lateral earth pressure coefficients and forces behind retaining walls in static and earthquake condition based on rankine culomb formulas and also mononobe okabe methods.
Earth pressure in ram structural system bentley communities. Lateral earth pressure there are 3 states of lateral earth pressure 1. The innuence of phase on the calculation of pseudostatic earth pressure on a. Peysanj is the only software you need for your bearing capacity analyses.
Retaining wall design, lateral earth pressure, earth pressure, rankine formula, determination of earth pressure, seismic, geotechnical software, active earth. Software by fine civil engineering this program computes basic earth pressures active pressure, passive pressure, and pressure at rest acting upon an arbitrary shaped structure. Deep excavation atrest lateral earth pressures deep. Download excel based calculation sheet for designing retaining wall perfectly. Software tagged with lateral earth pressure calculation. Cantilever and restrained retaining wall design software. A geotechnical short course on slope stability, lateral. Kp passive earth pressure passive is more like a resistance 10. Thus the lateral pressure on a vertical surface retaining water is equal to.
The expanded solution is based on the conjugate stress concept, without employing any additional assumptions. The rankine method does not take the friction between wall and soil into account. This manual provides guidance for the safe design and economical. Firstly we will learn rankine earth pressure theory the most important and then coulomb earth pressure theory. Active earth pressure coefficient for vertical wall rankine. As the wall does not move, the earth pressure exerted does not cause any lateral strain, and hence, there is no. Rankine earth pressure theory and coulombs earth pressure theory. Lateral earth pressure 111 the lateral earth pressure problem lateral earth pressure is a significant design element in a number of foundation engineering problems. Lateral earth pressure software lateralk novo tech software. The lateral earth pressure exerted by the backfill on a retaining wall which is fixed in position and cannot move is known as earth pressure at rest. Lateral earth pressure for nongeotechnical engineers. It is denoted by the symbol p 0, and its units are knm 2, tm 2, or kgfcm 2. The calculation of active soil pressure on retaining walls is of fundamental. Re shoring wall is stateoftheart software for designing shoring systems using current industry standards and methods.
For spreadsheets and more examples of calculating active and passive pressures see lateral earth pressure ii. Lateral loads of the type other are limited to user defined nodal loads, or user defined story forces i. A conceptual model was made which was used for the different hand calculation methods, rankine, boussinesq, coloumb, culmann as well as for finite element. Earth pressure at rest at rest earth pressure occur when there is no wall rotation such as in a braced wall. Simplified method for calculating the active earth. Basement retaining wall design overview asdip software. The wall may be restrained from moving, for example. Lateralk is a simple computer program for calculation of lateral earth pressure. Fhwa recommends a number of diagrams that depend on soil type, and number of. Loads and forces acting on retaining wall and their calculations.
This subject has been discussed in our previous post cantilever retaining walls. Calculation of passive earth pressure of cohesive soil. Weber course content content section 1 retaining walls are structures that support backfill and allow for a change of grade. Earth pressure and retaining wall basics for nongeotechnical engineers richard p. Earth pressure coefficients calculator geotechnical. The software in general is very good and ties in well with the way we do things here. The objective of this course is to familiarize primarily the nongeotechnical engineer such as civil engineers, structural engineers, architects and landscape architects with simple background theory. The rankine classic earth pressure solution has been expanded for the calculation of seismic earth pressure on rigid retaining walls supporting c. Lateralk is a simple software for calculating lateral earth pressure coefficients and forces behind retaining walls in static and earthquake condition based on rankine coulumb formulas and also mononobe okabe methods.