Cast iron on asbestos, fabric brake material, Copyright 2000 - We then considered how this phenomenon occurs in Retaining Walls and what it means for us as designers. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Typically steel on steel dry static friction coefficient 0.8 drops to 0.4 when sliding is initiated - and steel on steel lubricated static friction coefficient 0.16 drops to 0.04 when sliding is initiated. the friction coefficient can be determined only roughly. Experimental Study on Friction Factor for Fiber Reinforced Polymer Tendons in Pretensioned Prestressed Concrete Members. Coefficients of friction between materials are best determined through testing. Vibration Engineering . Plotting these values we obtain the following chart. Friction force develops between contacting surfaces of two bodies and acts to resist relative motion between the bodies. 0.45 - 0.75. The thermal load is of equal magnitude but opposite in direction on each pier. Click Here to join Eng-Tips and talk with other members! I have soil boring's which provide the soil angle of internal friction (),which is 26 degrees. Overturning Ratio: Controlling ratio of the resisting moment divided by the overturning moment. Am i looking at that correctly? The basic raw materials are coal, iron ore, limestone and various chemicals. Some further information. Publication: Special Publication. This is explained by the fact that with an increase in porosity, the area of actual soil contact with the surface of a foreign body decreases, i.e. The coefficient of friction for concrete on rock is often quoted as 0.30 to 0.4. , Coefficient of friction f=0.30 . Registration on or use of this site constitutes acceptance of our Privacy Policy. Close this window and log in. Reference, Hi, I am Shibashis, a blogger by passion and an engineer by profession. s r.o., All rights reserved |, Influence of Friction between Soil and back of the Structure | Earth Pressures | GEO5 | Online Help, Distribution of earth pressure along the structure for, Distribution of earth pressure along structure for, Distribution of Earth Pressures in case of Broken Terrain, Influence of Friction between Soil and back of the Structure, Table of Ultimate Friction Factors for Dissimilar Materials, Copying and Pasting Soils and Rigid Bodies, Modification of Template During Data Input, (3) Parameters for Input File Splitting into Columns, Analysis According to the Safety Factor (ASD), Analysis According to the Theory of Limit States (LSD), Analysis of Foundations (Spread Footing, Piles), LRFD - Analysis of Retaining Walls (Support Structures), Restrictions on the Optimization Procedure, Terrain - Plane and Polygonal Slip Surface, Surcharge - Plane and Polygonal Slip Surface, Anchors - Plane and Polygonal Slip Surface, Vertical Bearing Capacity - Analytical Solution, Vertical Bearing Capacity - Spring Method, Settlement - Linear Load-Settlement Curve (Poulos), Settlement - Non-Linear Load-Settlement Curve (Masopust), Horizontal Bearing Capacity - Elastic Subsoil (p-y Method), Horizontal Bearing Capacity - Brom's Method, Settlement - Cohesionless Soil (Load-Settlement Curve), Calculation of Winkler-Pasternak Constants from Deformation Parameters of Soils, Calculation of Winkler-Pasternak Parameters C1 and C2 from Geological Profile, Definition of Construction Site using the GPS, Data Transfer from the "Point Cloud" program, Relation between Field Test, Soil Profile and Borehole, Creation of Soil Profile using Classification of Soils, Creation of Soil Profile from an SPT, DPT or PMT, Creation of Geological Section from the Geological Model, Geological Model with Layers Following the Terrain, Modification of the Final 3D Model Using Boreholes, Copying data from the Stratigraphy program to other GEO5 programs, Principle of Numerical Solution of Consolidation, Numerical Implementation of MCC and GCC Models, Boundary Conditions in Dynamic Analysis of Earthquake, Material Parameters in Earthquake Analysis, Loss of Convergence of Nonlinear Analysis, Eigenvalue analysis - calculation of eigenfrequencies and eigenmodes, Setting Basic Parameters of Slope Stability Analysis, Setting Driving Parameters of Relaxation of Reduction Factor, Increment of Earth Pressure due to Surcharge, Increment of Earth Pressure under Footing, Active Earth Pressure - The Mazindrani Theory (Rankine), Active Earth Pressure - The Coulomb Theory, Active Earth Pressure - The Mller-Breslau Theory, Active Earth Pressure - The Caquot Theory, Passive Earth Pressure - The Rankine and Mazindrani Theory, Passive Earth Pressure - The Coulomb Theory, Passive Earth Pressure - The Caquot - Krisel Theory, Reduction Coefficient of Passive Earth Pressure, Passive Earth Pressure - The Mller - Breslau Theory, Passive Earth Pressure - The Sokolovski Theory, Passive Earth Pressure - SP 22.13330.2016, Earth Pressure at Rest for an Inclined Ground Surface or Inclined Back of the Structure, Without Ground Water, Water is not Considered, Hydrostatic Pressure, Ground Water behind the Structure, Hydrostatic Pressure, Ground Water behind and in front of the Structure, Surface Surcharge - Active Earth Pressure, Trapezoidal Surcharge - Active Earth Pressure, Concentrated Surcharge - Active Earth Pressure, Increment of earth pressure due to horizontal surcharge, Surface Surcharge - Earth Pressure at Rest, Trapezoidal Surcharge - Earth Pressure at Rest, Concentrated Surcharge - Earth Pressure at Rest, Surface Surcharge - Passive Earth Pressure, Forces from Earth Pressure at Rest Acting on the Rigid Structure, Influence of Earthquake according to Chinese Standards, Influence of Earthquake according to JTJ 004-89, Influence of Earthquake according to JTS 146-2012, Influence of Earthquake according to SL 203-97, Seismic Fortification Intensity according to Chinese Standards, Water Influence according to Chinese Standards, Importance Coefficient for Seismic Design Ci, Adjusting Coefficient for Seismic Bearing Capacity a, Evaluation of Forces in the Footing Bottom, Internal Stability of a Gabion Wall - Safety Factor, Internal stability of a Gabion Wall - Limit States, Analysis of Bearing Capacity of the Nails, Automatic Calculation of the Coefficient of Pressure Reduction Below Ditch Bottom, Analysis of Anchored Wall Simply Supported at Heel, Modulus of Subsoil Reaction According to Schmitt, Modulus of Subsoil Reaction According to Chadeisson, Modulus of Subsoil Reaction According to CUR 166, Modulus of Subsoil Reaction Determined from Iteration, Modulus of Subsoil Reaction According to Menard, Modulus of Subsoil Reaction According to NF P 94-282, Modulus of Subsoil Reaction Specified by Dilatometric Test (DMT), Modulus of Subsoil Reaction According to Chinese standards, Verification of Ditch Bottom according to Chinese Standards, Upheavel Check according to Chinese Standard, Heave Check according to Chinese Standard, Piping Check according to Chinese Standard, Terrain Settlement behind the Shoring Structure, Determination of Forces Acting on an Anti-Slide Pile, Distribution of Pressures Above the Slip Surface, Calculation of passive force in subsequent stage, Calculation of Internal Forces on a Shaft (Dimensioning), Earthquake Analysis According to GB 50111-2006, Earthquake Analysis According to NB 35047-2015, Earthquake Analysis According to GB 50330-2013, Earthquake Analysis According to JTG B02-2013, Analysis According to the Theory of Limit States / Safety Factor, ITF Method (Imbalance Thrust Force Method), Changing the Inclination of Dividing Planes, Influence of Water Acting on Slip Surface, Own Water Force Acting Only on Slip Surface, Verification According to the Factor of Safety, Verification According to the Theory of Limit States, Extensible Reinforcements - Active Earth Pressure, Inextensible Reinforcements - Combination of Earth Pressures, Bearing Capacity of Foundation on Bedrock, Analysis According to EC 7-1 (EN 1997-1:2003), Parameters to Compute Foundation Bearing Capacity, Horizontal Bearing Capacity of Foundation, Determination of Cross-Sectional Internal Forces, Verification According to the Safety Factors, Coefficient of Increase of Limit Skin Friction, Correction Factor for Soil Poisson's Ratio Rv, Correction Factor for Stiffness of Bearing Stratum Rb, Base-Load Proportion for Incompressible Pile BETAo, Correction Factor for Pile Compressibility Ck, Correction Factor for Poisson's Ratio of Soil Cv, Correction Factor for Stiffness of Bearing Stratum Cb, Correction Factor for Pile Compressibility Rk, Correction Factor for Finite Depth of Layer on a Rigid Base Rh, Constant Distribution of Modulus of Subsoil Reaction, Modulus of Subsoil Reaction According to CSN 73 1004, Modulus of Subsoil Reaction According to Matlock and Reese, Modulus of Subsoil Reaction According to Vesic, Pile Horizontal Bearing Capacity - Broms Method, Determination of Equivalent Average Cone Tip Resistance, Determination of Average Cone Tip Resistance, Coefficient of Influence of Pile Widened Base BETA, Coefficient of Reduction of a Pile Base Bearing Capacity ALFA p, Correlation Coefficients for Evaluating of Bearing Capacity of Piles from CPTs, Verification According to the Safety Factor, Cohesionless Soil (Analysis for Drained Conditions), Cohesive Soil (Analysis for Undrained Conditions), Analysis According to the Theory of Limit States, Calculation of Stiffness of Vertical Springs, Bearing Capacity of Cross Section Loaded by Normal Force, Bearing Capacity of Cross Section Loaded by Combination of Bending Moment and Normal Force, Constant A Reflecting the Type of Support in the Micropile Head, Modulus of Horizontal Reaction of Subsoil, Calculation of the Modulus of Horizontal Reaction of Subsoil Er, Values of the Modulus of Subsoil Reaction Ep, Bearing Capacity of the Micropile Root Section, Coefficients of Type of Application of Micropile, Skin Friction and Bearing Capacity of the Micropile Root in Rock, Skin Friction of the Micropile Root - Graphs, Classification of Soils According to Robertson, Coefficient of Penetrometer (Net Area Ratio), Overall Settlement and Rotation of Foundation, Influence of Foundation Depth and Incompressible Subsoil, Analysis According to NEN (Buismann, Ladd), Analysis for Overconsolidated Sands and Silts, Analysis for Overconsolidated Cohesive Soils, Settlement Analysis Using DMT (Constrained Soil Modulus), Determination of the Influence Zone Depth, Method of Restriction of the Primary Stress Magnitude, Overconsolidation Index of Secondary Compression, Recommended Values of Parameters for Volume Loss Analysis, Coefficient of Calculation of Inflection Point, Subsidence Trough with Several Excavations, Verification of Rectangular Cross Section Made of Plain Concrete, Verification of Rectangular RC Cross Section, Verification of Circular RC Cross Section, Verification of Spread Footing for Punching Shear, Design of Longitudinal Reinforcement for Slabs, Verification of Rectangular Cross Sections Made of Plain Concrete, Concrete Cross Section with Steel Profile Verification. 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