1 files changed, 176 insertions, 0 deletions
diff --git a/Principles_Of_Geotechnical_Engineering_by_B_M_Das/9-in_situ_stresses.ipynb b/Principles_Of_Geotechnical_Engineering_by_B_M_Das/9-in_situ_stresses.ipynb
new file mode 100644
index 0000000..5423a71
--- /dev/null
+++ b/Principles_Of_Geotechnical_Engineering_by_B_M_Das/9-in_situ_stresses.ipynb
@@ -0,0 +1,176 @@
+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 9: in situ stresses"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 9.1: solved.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc\n",
+"//initialisation of variables\n",
+"Ds= 16.5 //kN/m^3\n",
+"S= 19.25 //kN/m^3\n",
+"g= 9.8 //kN/m^3\n",
+"h1= 6 //m\n",
+"h2= 13 //m\n",
+"//at point A\n",
+"Sa= 0\n",
+"Ua= 0\n",
+"Sa1= 0\n",
+"//at point B\n",
+"Sb= h1*Ds\n",
+"Ub= 0 \n",
+"Sb1= Sb-Ub\n",
+"//at point C\n",
+"Sc= h1*Ds+h2*S\n",
+"Uc= h2*g\n",
+"Sc1= Sc-Uc\n",
+"//results\n",
+"printf ('total pressure at C= % 2f kN/m^3 ',Sc)\n",
+"printf ('pore water pressure at C = % 2f kN/m^3 ',Uc)\n",
+"printf ('effective stress at point C= % 2f kN/m^3 ',Sc1)\n",
+""
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 9.2: solved.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc\n",
+"//initialisation of variables\n",
+"h= 20 //ft\n",
+"g= 120 //kg/ft^3\n",
+"h1= 12 //ft\n",
+"w= 62.4 //kg/ft^3\n",
+"//calculations\n",
+"H= h-(h1*w/g)\n",
+"//results\n",
+"printf ('maximu depth that can be made in clay = % 2f ft ',H)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 9.3: solved.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc\n",
+"//initialisation of variables\n",
+"G= 2.68\n",
+"e= 0.52\n",
+"g= 9.81 //kN/m^3\n",
+"h1= 0.7 //m\n",
+"h2= 1 //m\n",
+"h3= 1.5 //m\n",
+"h4= 2 //m\n",
+"//calculations\n",
+"//for soil A\n",
+"sa= (G+e)*g/(1+e)\n",
+"//point a\n",
+"Sa= h1*g+h2*sa\n",
+"u= (h2+h1+h3/2)*g\n",
+"Es= Sa-u\n",
+"//point b\n",
+"sb= h1*g+h4*sa\n",
+"ub= (h4+h1+h3)*g\n",
+"Eb= sb-ub\n",
+"i= h3/2\n",
+"s= i*g\n",
+"//results\n",
+"printf ('effective stress at point a= % 2f kN/m^2 ',Es)\n",
+"printf ('effective stress at point b= % 2f kN/m^2 ',Eb)\n",
+"printf ('seepage force per unit voume = % 2f kN/m^3 ',s)"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 9.4: solved.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"clc\n",
+"//initialisation of variables\n",
+"C0= 0.357\n",
+"H1= 30.5 //ft\n",
+"H2= 5 //ft\n",
+"w= 62.4 // lb/ft^3\n",
+"D= 20\n",
+"g= 112 // lb/ft^3\n",
+"//calculations\n",
+"G= g-w\n",
+"FS= D*G/(C0*w*(H1-H2))\n",
+"//results\n",
+"printf ('safety factor = % 2f ',FS)"
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}