MARTINDALE'S CALCULATORS ON-LINE CENTER ENGINEERING A-Z GEOTECHNICAL ENGINEERING - GEO-ENGINEERING (Calculators, Spreadsheets, Courses, etc.)

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Geotechnical Engineering - Geo-Engineering - Ground Engineering Geotechnical Engineering Courses & Lectures Geotechnical Aspects of Highway Design ~ Soil Physics & Soil Chemistry Geo-Engineering - Geoengineering Applied Geophysics & Geo-Engineering Modeling Foundations, Bored Piles, etc. ~ Landfill Design ~ Retaining Walls Slope Stability ~ Water Runoff Back to Engineering: A-Z Calculators Center Calculators On-Line Center Home Page

Geotechnical Courses & Lectures GEOTECHNICAL COURSES & LECTURES Geotechnology Courses, Lectures & Seminars with Videos/Movies & Audio/Sound GEOTECHNICAL LECTURES/SEMINARS (REALPLAYER) - Geotechnical and Materials Engineering Research, Department of Civil and Environmental Engineering and the Office of Information Technology, College of Engineering, University of Tennessee Multimedia Geotechnology Lectures (Text, Images, Videos/Movies & Audio/Sound) VERY VERY VERY...EXTENSIVE. Examples of Geotechnology Lectures include: "...Decked Prestressed Concrete Girder Bridges for Rapid Construction; Determination of Oriented Strandboard Properties from a 3D Density; Premature Deterioration of Concrete Pavements in Airfields: Role of Deicer; Innovations in Near-Surface Geophysics Data for Shallow Subsurface Imaging; Surface Wave Methods In Geotechnical Engineering; etc..." For more information see the Mediasite Presentations or the Department of Civil and Environmental Engineering Geotechnical Applets & Calculators GEOTECHNICAL: DIRECT SHEAR TEST SIMULATION (JAVA APPLET) - J. Sharma, Department of Civil and Geological Engineering, College of Engineering, University of Saskatchewan, Saskatoon, Saskatchewan Canada VERY EXTENSIVE. Direct Shear Test Simulation "...shows a sample of soil in a direct shear test apparatus. The maximum preconsolidation pressure..." For more information see Teaching; Jitendra Sharma's Home Page or the Department of Civil and Geological Engineering Geotechnical Aspects of Highway Design GEOTECHNICAL ASPECTS OF HIGHWAY DESIGN & COMPACTION Geotechnical Aspects of Highway Design Related Centers FOR HIGHWAY DESIGN, CONSTRUCTION, ETC. SEE THE CIVIL ENGINEERING CENTER Geotechnical Aspects of Highway Design & Application of Geophysical Methods to Highway Related Problems APPLICATION OF GEOPHYSICAL METHODS TO HIGHWAY RELATED PROBLEMS - Central Federal Lands Highway Division (CFLHD), Federal Lands Highway Division, Federal Highway Administration Multimedia Geophysical Methods Manual, Teaching Modules (Text & Images). VERY VERY VERY...EXTENSIVE. Highway Geophysical Methods provides "...highway engineers with a basic knowledge of geophysics and nondestructive test (NDT) methods for solving specific engineering problems during geotechnical site investigation, construction, and maintenance of highways..." Highway Geophysical Methods Chapters & Subchapters include: Geophysical Methods Quantities "...Electrical Conductivity & Resistivity; Magnetic Susceptibility: Density; Porosity; Seismic Velocities; etc..." Surface Methods "...Potenital Field Methods; Seismic Methods; Electrical Methods; etc..." Borehole Methods "...In-hole Procedures; Crosshole Procedures; Surface to Borehole Procedures; Logging Techniques and Tools..." Engineering Applications Bridge System Substructure "...Determining The Unknown Depth of Foundations; Integrity Testing; Rebar Quality And Bonding To Concrete Within Concrete Elements; Bridge Foundation Scour..." Bridge System Superstructure "...Deck Stability Analysis; QA/AC Of New Decks; Baseline Condition Assessment; etc..." Pavements "...Condition Evaluation Of Existing Pavement; Transportation/Geotechnical Methods; etc..." Roadway Subsidence "...Mapping Voids, Sinkholes, Abandoned Mines, and Other Cavities; Roadbed Clay Problems..." Subsurface Characterization "...Subsurface Geophysical Mapping And Imaging; Geophysical Methods To Determine Physical Properties; Geophysical Methods To Image Buried Manmade Features..." Vibration Measurements "...Traffic Vibrations; Blasting Vibrations; Construction Vibrations..." For more information see Geotechnical Resources; Design or the Central Federal Lands Highway Division (CFLHD)

Soil Physics & Soil Chemistry SOIL PHYSICS & SOIL CHEMISTRY CALCULATORS, APPLETS & SOFTWARE Soil Calculators SOIL CALCULATIONS - J.E. Clausner & E. Briuer, Dredging Operations and Environmental Research, Dredging Operations Technical Support (DOTS), Environmental Laboratory, Engineer Research and Development Center (ERDC), Waterways Experiment Station (WES), U.S. Army Corps of Engineers VERY EXTENSIVE. Soil Calculators include: Determine Routine to Run "...Water content of soil; Dry density of soil; Degree of Saturation; etc..." Soil Calculators input values include: Water Content Method 1 "...Weight of water in soil; Weight of soil particles; Dry density; Void Ratio; Degree of Saturation..." Water Content Method 2 "...Wet weight of soil; Wet weight of soil; Volume of solids; Porosity; Degree of Saturation..." Water Content Method 3 "...Water content; Weight of water; Dry density of soil; Specific gravity of soil..." For more information see Dredging Calculations; Dredging Operations and Environmental Research; Dredging Operations Technical Support (DOTS); Environmental Laboratory or the Engineer Research and Development Center (ERDC) Soil Physics & Soil Chemistry Modeling Software SOIL MODELS: SOIL PHYSICS & SOIL CHEMISTRY SOFTWARE - United States Salinity Laboratory, Agriculture Research Service, Department of Agriculture VERY VERY VERY...EXTENSIVE. Soil Physics & Soil Chemistry Software Requires Regristration. For more information see Products & Services or the United States Salinity Laboratory Examples from over "25" Soil Physics & Soil Chemistry Software includes EXTRACT CHEM Model EXTRACT CHEM Model is "...developed to predict the major ion, B composition, electrical conductivity (EC) and osmotic pressure (OP) of a soil solution at a desired water content based on the known ion composition at another water content..." 3DADE Model 3DADE Model is a "...program for evaluating a series of analytical solutions of the 3-Dimensional Advection-Dispersion Equation. The analytical solutions pertain to three-dimensional solute transport during steady unidirectional water flow in porous media with uniform transport and flow properties..." CHAIN 2D Model CHAIN 2D Model simulates "...two-dimensional variably saturated water flow, heat transport, and the movement of solutes involved in sequential first-order decay reactions. The program numerically solves the Richards' equation for saturated-unsaturated water flow and the convection-dispersion equation for heat and solute transport. The flow equation incorporates a sink term to account for water uptake by plant roots..." ROSETTA Model ROSETTA Model "...offers five PTFs that allow prediction of the hydraulic properties with limited or more extended sets of input data. This hierarchical approach is of a great practical value because it permits optimal use of available input data..." Soil Physics Calculators & Applets SOIL PHYSICS SOFTWARE TOOLS (JAVA WEB START) - D.L. Nofziger, Department of Plant and Soil Sciences, Division of Agricultural Sciences and Natural Resources, Oklahoma State University VERY VERY VERY...EXTENSIVE. Soil Physics Software Tools includes "...research tools, instructional aids, and decision-support systems for managing soil and water resources..." Soil Physics Calculators include: "...Steady-State Water Movement in Saturated and Unsaturated Soils Calculator; Transient Water Movement in Soils Calculator; Water Balance in the Root Zone Calculator; Diffusion of Chemicals in Soils Calculator; Chemical Movement in Soils with Steady-State Water Flow Calculator; Chemical Movement in Soils with Transient Water Flow Calculator; etc..." For more information see Soil Physics; Department of Plant and Soil Sciences or the Division of Agricultural Sciences and Natural Resources SOIL PHYSICS TEACHING TOOLS (JAVA APPLETS) - D. L. Nofziger, Department of Plant and Soil Sciences, Division of Agricultural Sciences and Natural Resources, Oklahoma State University VERY VERY VERY...EXTENSIVE. For more information see Soil Physics; Department of Plant and Soil Sciences or the Division of Agricultural Sciences and Natural Resources Some examples from over "15" Soil Physics Calculators - Applets include Steady-state Water Flow in Homogeneous Media Calculator Steady-state Water Flow in Homogeneous Media Calculator solves "...the Darcy and Buckingham-Darcy equations for steady-state water movement in soils and to display the predictions of these models in graphical form..." Water Balance Estimates Calculator Water Balance Estimates Calculator "...enables the user to specify the capacity of the root zone of a soil to store water, the amount of water in the root zone at a particular date,..." Soil Temperature Variations With Time and Depth Calculator Soil Temperature Variations With Time and Depth Calculator "...estimates daily soil temperatures and displays these values as functions of time or depth for user defined input parameters..." Diffusion of Solute in Soil Media Calculator Diffusion of Solute in Soil Media Calculator "...demonstrates the one-dimensional spreading of a chemical plume of width h in a semi-infinite system of zero background concentration. The spreading process is illustrated in a graph..." Mixing in an Aquifer Calculator Mixing in an Aquifer Calculator "...allows you to modify these parameters and to see the aquifer concentration as a function of time as well as the total time required to reach a critical concentration..." Soil Texture Calculators & Applets SOIL TEXTURE TRIANGLE BULK DENSITY CALCULATORS: CANADIAN SYSTEM & U.S. SYSTEM - Pedosphere VERY VERY EXTENSIVE. Soil Texture Triangle Bulk Density Calculators "...Soil physical properties (texture, structure and organic matter) control the total pore space and pore size distribution in soil..." Soil Texture Triangle Bulk Density Calculators include: "...Canadian Texture Triangle Calculator; Canadian Bulk Density Calculator; American Texture Triangle Calculator; American Bulk Density Calculator..." For more information see Pedosphere SOIL WATER CHARACTERISTICS: HYDRAULIC PROPERTIES CALCULATOR - Developed by: K.E. Saxton, Agricultural Research Service, USDA, in cooperation with the Department of Biological Systems Engineering, Washington State University VERY EXTENSIVE. Soil Texture Triangle Calculator "...estimates soil water tension, conductivity and water holding capability based on the soil texture, organic matter, gravel content, and salinity..." For more information see the Department of Biological Systems Engineering

Geo-Engineering - GeoEngineering GEO-ENGINEERING CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS APPLIED GEOPHYSICS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS THE BERKELEY COURSE IN APPLIED GEOPHYSICS (JAVA APPLETS) - F.H. Morrison, E. Gasperikova & J. Washbourne, Applied Geophysics Program, GeoEngineering, Department of Civil and Environmental Engineering, College of Engineering, University of California, Berkeley Multimedia Applied Geophysics Course (Text, Images, Animations, Simulations & Applets). VERY VERY VERY...EXTENSIVE. Applied Geophysics "...is a course about the methods used to map the distribution of physical properties beneath the surface of the earth. These methods are used by geologists, hydrologists and reservoir, soils and geotechnical engineers to locate subsurface features..." Applied Geophysics Course Chapters & Subchapters include: Gravity Method "...Gravity and gravity field of the Earth; Gravity surveys; Density of minerals, soils and rocks; Gravity anomalies of simple shapes; etc..." Magnetic Method "...Magnetic Fields; The magnetic field of the earth; Magnetic anomalies; Magnetometers; etc..." DC Electric Methods "...Electric and electromagnetic fields; DC Electrical Methods (the Resistivity Method); Electrical conductivity of rocks and minerals; etc..." Electromagnetic Methods "...EM Theory; Targets in free space; The half space response; etc..." Seismic Methods "...Seismic waves; Reflection and Refraction; Time-distance plots; Seismic velocity, attenuation and rock properties; etc..." For more information see Frank H. Morrison's Home Page; Applied Geophysics Program; GeoEngineering or the Department of Civil and Environmental Engineering Some examples from over "12" Geophysics Calculators include Gravity Methods Chapter: Gravity Response of the Cylinder/Sphere Calculator Magnetic Methods Chapter: Magnetic Survey Simulation Calculator Electric Methods Chapter: Archie's Law Calculator Electric Methods Chapter: Cole=Cole Calculator Seismic Methods Chapter: Raytracing Calculator - RayPaths for Three-Layer Model Calculator GEO-ENGINEERING MODELING CALCULATORS & APPLETS GEO-ENGINEERING MODELING (JAVA APPLETS & JAVA WEB START) - Geo-Engineering Modeling through INternet Informatics (GEMINI), Kansas Geological Survey, University of Kansas VERY VERY VERY...EXTENSIVE. For more information see GEMINI (Geo-Engineering Modeling through INternet Informatics) or the Kansas Geological Survey Examples of Geoengineering Calculators including Reservoir Engineering Modeling Calculators include PVT Calculator PVT (Pressure/Volume/Temperature) data play an indispensable role in reservoir engineering calculations..." PVT Calculator includes: "...(1) Oil Calculations: Oil Formation Volume Factor, Coefficient Of Isothermal Compressibility, Dead and Saturated Oil Viscosities calculations; (2) Water Calculations: Compressibility of Brine and Viscosity of Water calculations; (3) Gas Calculations: Gas Formation Volume Factor, Gas Compressibility and Gas Viscosity calculations..." Material Balance Calculator Material Balance Calculator "...will calculate and plot volume of fluids withdrawn from the reservoir (F/E) against the volume of water influx (We/E) at regular time steps..." Material Balance Calculator input values include: "...Fluid Properties; Aquifer Properties; Reservoir Properties & Aquifer Constant Calculations..." Gridding and Mapping Calculator Gridding and Mapping Calculator "...is an interactive process that assists the user in building simple color contour maps of Oil & Gas Well data..." LAS File Viewer Calculator LAS File Viewer Applet "...was created to assist the user in locating and viewing digital LAS (Log ASCII Standard version 2.0) Files..." LAS Viewers "...have the capability to plot a Rhomaa-Umaa Lithology track if the LAS File has a Photoelectric, Bulk Density and Neutron Porosity Curves..." Foundations FOUNDATIONS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS FOUNDATION DESIGN CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS GEOTECHNICAL AND STRUCTURAL DESIGN CALCULATORS & APPLETS GEOTECHNICAL AND STRUCTURAL DESIGN OF FOUNDATIONS (SHALLOW FOUNDATION DESIGN MADE EASY!) - CALCULATORS - A.M. Ghaly, Union College VERY VERY VERY...EXTENSIVE. Geotechnical & Structural Design Options INPUT Values include: System of Units (SI or U.S.); Design Theory "...General Bearing Capacity Theory or Terzaghi's Bearing Capacity Theory..." Foundation Shape "...Square, Circular, Strip or Rectangular..." AN EXAMPLE: DESIGN OPTIONS SELECTED include: System of Units = U.S.; Design Theory = General Bearing Capacity; Foundation Shape = Square DESIGN CALCULATORS FOR ABOVE SELECTED OPTIONS INCLUDE: Bearing Capacity Factors Calculator; Shape, Depth & Inclination Factors Calculator; Surcharge at Foundation Level Calculator; Bearing Capacity of Soil Calculator; Structural Design of Foundations Calculators include: "...Reinforced Concrete Design using the Strength Design Method Calculator; Soil Contact Pressure and Ultimate Moment Calculator; Strength Reduction Factor Calculator..." Design of a Rectangular Section in Bending Calculators include: "...Flexure Strength Calculator; Area Steel Calculator..." Shear Strength Calculator; Development Length The basic development length Calculator; SUMMARY OF DESIGN Display. For more information see Ashraf M. Ghaly's Home Page PILE FOUNDATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS PILE FOUNDATION DESIGN CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS PILE FOUNDATION DESIGN: A STUDENT GUIDE - A. Abebe & I.G.D. Smith, Department of Civil & Transportation Engineering, School of Engineering and the Built Environment, Napier University, Edinburgh, Scotland, U.K. VERY VERY EXTENSIVE. Multimedia Pile Foundation Design Course (Text, Images, Animations & Simulations). Pile Foundation Design Course Chapters include: "...Introduction to Pile Foundations; Load on Piles; Load Distribution; Single Pile Design; Pile Spacing and Pile Arrangement; Load Tests on Piles; etc..." For more information see Pile Foundation Design: A Student Guide Home Page; On-line Projects or the School of Engineering and the Built Environment

Landfill Design LANDFILL CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS LANDFILL DESIGN CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS LANDFILL DESIGN CALCULATORS - Landfilldesign.com VERY VERY VERY...EXTENSIVE. Landfill Design Calculators assist "...users in implementing best practice because we are the only entity in this field dedicated towards creating user friendly design calculator software packages that integrate the key lesson..." Landfill Design Calculator Subject Categories include: "...Cost-Benefit Analysis; Landfill Lateral Drainage System; Landfill Cover Slope Stability; Landfill Gas Pressure Relief Layer; Geomembrane Puncture Protection; Geomembrane Anchor Trench Design; Landfill Access Ramp; etc..." For more information see the Design or Landfilldesign.com Examples from over "37" Landfill Design Calculators include Cost/Benefit Analysis for Geosynthetic Drainage Media vs. Natural Drainage Media Calculator Landfill Lateral Drainage System - Single Slope Design Calculators Landfill Gas (LFG) Pressure Relief Layer Calculators Geomembrane Anchor Trench Design Calculators Retaining Walls RETAINING WALL CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS RETAINING WALL DESIGN CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS RETWALL: RETAINING WALL FILL SIMULATION & CUT SIMULATION (JAVA APPLET) - I.G.D. Smith & L.D. Kontoulis, Department of Civil & Transportation Engineering, School of Engineering and the Built Environment, Napier University, Edinburgh, Scotland, U.K. VERY VERY EXTENSIVE. RetWall "...has been developed to help engineers select the most appropriate type of wall to adopt for a particular situation...RetWall has been developed in two parts: Cut situations and Fill situations..." For more information see On-line Projects or the School of Engineering and the Built Environment Slope Stability SLOPE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SLOPE STABILITY CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SLOPE STABILITY CALCULATOR - P. Diehl, WISE Uranium Project, Arnsdorf, Germany VERY VERY EXTENSIVE. Slope Stability Calculator "...determines the factor of safety for a soil slope. It uses the Bishop Modified and/or Ordinary Method of Slices for a 2-dimensional setting...The calculator searches the circular slip surface for which the factor of safety is minimal. Then, it calculates..." For more information see Calculators or the WISE Uranium Project COVER SOIL SLOPE STABILITY DESIGN CALCULATORS - Landfilldesign.com VERY VERY VERY...EXTENSIVE. For more information see the Landfill Design; Design or Landfilldesign.com Cover Soil Slope Stability Design Calculators include: Seepage Force Stability Calculator Seepage Force Stability Calculator input values include: "...Length of the slope; Slope angle; Height of cover soil; Height of drainage layer; Permeability of cover soil; Design permeability of drainage layer; Precipitation; Dry unit weight of cover soil; etc..." Landfill Gas Pressure Stability Calculator Landfill Gas Pressure Stability Calculator input values include: "...Thickness of cover soil perpendicular to the slope; Slope inclination angle; Geomembrane-soil interface friction angle; Geomembrane-soil interface adhesion; etc..." Veneer Reinforcement Stability Calculator Veneer Reinforcement Stability Calculator input values include: "...Thickness of the cover soil; Slope angle; Length of slope measured along geomembrane; Unit weight of the cover soil; Friction angle of the cover soil; Ultimate tensile strength of geosynthetic reinforcement; Reduction factor for installation damage; etc..." Seismic Force Stability Calculator Seismic Force Stability Calculator input values include: "...Thickness of the cover soil; Slope angle; Length of slope measured along geomembrane; Friction angle of the cover soil; Cohesion of the cover soil; Interface friction; Seismic coefficient; etc..." TAILINGS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS TAILINGS FLOW SLIDE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS TAILINGS FLOW SLIDE CALCULATOR - P. Diehl, WISE Uranium Project, Arnsdorf, Germany VERY EXTENSIVE. Tailings Flow Slide Calculator "...Determine the extent of a flow slide of mill tailings liquefied during an earthquake, and view a computed animation of the flow slide..." Tailings Flow Slide Calculator input values include: "...Initial Height of Dam; Bed Slope; Tailings Properties "...Total Unit Weight; Bingham Yield Strength; Bingham Plastic Viscosity; etc..." For more information see Calculators or the WISE Uranium Project

Water Runoff WATER RUNOFF CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS CALCULATE EROSIVITY INDEX WITH SITE MAPPING FOR NEW CONSTRUCTION AND CALCULATE EROSIVITY INDEX WITH SITE LAT/LONG AND/OR USE THE EROSIVITY INDEX ZONE MAP TO FIND INDEX ZONE EITHER BY COUNTY, STATE OR REGION OF THE U.S. - Program Manager: B. Rittenhouse, Water Permmits Division, U.S. Environmental Protection Agency; Program Development Team: W.L. Harma, Agricultural Economics, Blackland Research and Extension Center, Texas Agricultural Experiment Station, Texas A&M University System VERY VERY VERY...EXTENSIVE. The Erosivity Index Calculator is designed to make construction site estimates of an index value which, if it exceeds 5, a permit waiver must be obtained. It applies to the 48 contiguous states..." For more information see Texas Agricultural Experiment Station WATER RUNOFF: SHORT-TERM & LONG-TERM HYDROLOGIC IMPACT ASSESSMENT (L-THIA) DETAILED INPUT - Urban Sprawl Hydrologic Impact, Schools of Engineering, Agricultural & Biological Engeering, Purdue University & the Construction Engineering Research Laboratories Division of the US Army Corps of Engineers VERY VERY VERY...EXTENSIVE. Impacts of Land Use Change on Water Resources Water Runoff: Short-Term Impact Assessments Tools "...Includes four different tools: SedSpec, Rational Method, TR-55 & Database Frontend..." Water Runoff: Long-Term Impact Assessments Tools "...This tool uses the land use and a soil characteristic from the user along with thirty years of precipitation data to determine the average impact that a particular land use change or set of changes..." Water Runoff Tools input values include: By State; By County; Area in "...Acres, Hectares, Km2, Mi2..." Land Use "...Commercial; Industrial; Residential; Open Spaces; Parking/Paved Spaces; Water/Wetlands; Grass/Pasture; Agriculture; Forest; Custom Land Use..." Hydrologic Soil Groups..." For more information see Web-Based GIS and Decision Support Systems for Hydrological/Water Quality Impact Analysis or the College of Engineering RUNOFF CALCULATOR (RUNOFF 1) - S. Parson, Internet Watershed Educational Tool (InterWET), Penn State University VERY EXTENSIVE. Runoff Calculator "...The two main things that control runoff is the land cover and the soil. Runoff and infiltration do a balancing act..." Runoff Calculator INPUT Values include: "...Amount of Rain; Land Cover (Forest, Pasture, Row Crops, etc.); Soil Infiltration Rate (Sand, Silt, Clay); Soil Moisture (Dry, Moist, Wet)..." For more information see Internet Watershed Educational Tool (InterWET) WEPP MODEL: WATER EROSION PREDICTION PROJECT - National Soil Erosion Research Laboratory (NSERL), Agricultural Research Service, Department of Agriculture & located at Purdue University VERY VERY VERY...EXTENSIVE. "...a computer simulation that predicts soil erosion..." For more information see the Water Erosion Prediction Project (WEPP) Software or the National Soil Erosion Research Laboratory (NSERL) Water Erosion Prediction Calculators that Predict Soil Erosion include Basic Hillslope Profile Calculator Basic Hillslope Profile Calculator allows you to "...run a single landuse, single soil WEPP hillslope simulation..." Hillslope with Filter Strip at Bottom Calculator Hillslope with Filter Strip at Bottom Calculator allows you to "...add a different landuse area at the bottom of a hillslope..." Strip Cropping Calculator Strip Cropping Calculator allows you to "...use alternating crops down a hillslope..." Water Erosion Prediction Worksheet Calculator Water Erosion Prediction Worksheet Calculator allows you to "...run multiple simulations to see effects of landuse changes..."

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