Barton's Equation for Rock Shear Strength: Step-by-Step Practical Tunnel Example

Learn how to estimate the Shear Strength of Jointed Rock Masses using Barton’s Equation. This tutorial walks you through a practical engineering example—calculating the stability of a 90m deep tunnel in jointed granite. In this video, we cover: The core components of Barton's criterion: JRC (Joint Roughness Coefficient), JCS (Joint Wall Compressive Strength), and Residual Friction Angle. How to calculate normal stress based on rock density and depth. A step-by-step calculation for shear strength in a tunnel application. The impact of groundwater levels on rock mass stability. Shear strength of jointed rock is much lower than the strength of intact rocks. In the field, it represents the plane of weakness, and it can be associated with rock mass movements. There are several things considered in the estimation of jointed rock shear strength. If you are not familiar with them, you should watch the following videos first: Simple Formula to Estimate Total Vertical Stress in Rock Mass    • Simple Formula to Estimate Total Vertical ...   How to Measure Friction between Two Rock Surfaces I Tilt Test Procedure    • How to Measure Friction between Two Rock S...   Schmidt Hammer Test | Testing Procedure on How to Measure Rock Strength in Field    • Schmidt Hammer Test | Testing Procedure on...   Schmidt Hammer Test | Part 2: Data analysis    • Schmidt Hammer Test | Part 2: Data analysi...   How To Measure Rock Surface Roughness | Joint Roughness Coefficient    • Easy Way To Measure Rock Surface Roughness...   Other failure criteria: Hoek-Brown failure criteria    • Hoek-Brown Failure Criteria for Rock In Ci...   Using Mohr-Coulomb Failure Criteria for Rocks    • Using Mohr-Coulomb Failure Criteria for Ro...   Shear Strength of Jointed Rock | Barton's Equation    • Barton's Equation for Rock Shear Strength:...   📌 Subscribe for more Soil Mechanics and Engineering Geology tutorials! #rockmechanics #civilengineering #Geology #BartonsEquation #geotechnicalengineering