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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:7d0e973e8ccf199512f5a464e18af5d87fc63e5365435eef6c9cd5f40b3801c3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter6-Soil Compaction"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex2-pg127"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "#calculate maximum dry density and optimum moisture content\n",
+      "##initialisation of variables\n",
+      "G= 2.6\n",
+      "LL= 20.\n",
+      "P= 20.\n",
+      "##calclations\n",
+      "R= (4804574.*G-195.55*(LL)**2+156971*(P)**0.5-9527830)**0.5\n",
+      "n= (1.195e-4)*((LL)**2)-1.964*G-(6.617e-5)*(P)+7.651\n",
+      "w= math.e**n\n",
+      "##results\n",
+      "print'%s %.1f %s'% ('maximum dry density = ',R,' kg/m^3 ')\n",
+      "print'%s %.2f %s'%('optimum moisture content = ',w,' ')\n",
+      "\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "maximum dry density =  1894.2  kg/m^3 \n",
+        "optimum moisture content =  13.34  \n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex3-pg143"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "#calculate dry unit weight of compaction in the field and dry unit weight of compaction in the field\n",
+      "##initialisation of variables\n",
+      "do= 1570. ##kg/m^3\n",
+      "mo= 0.545 ##kg\n",
+      "M1= 7.59 ##kg\n",
+      "M2= 4.78 ##kg\n",
+      "M3= 3.007 ##kg\n",
+      "w= 0.102 ##\n",
+      "dmax= 19. ##KN/m^3\n",
+      "##calculations\n",
+      "Ms= M1-M2\n",
+      "Mc= Ms-mo\n",
+      "Vh= Mc/do\n",
+      "Dc= M3/Vh\n",
+      "Du= Dc*9.81/1000.\n",
+      "f= Du/(1.+w)\n",
+      "Rc= f*100./dmax\n",
+      "##results\n",
+      "print'%s %.2f %s'% ('dry unit weight of compaction in the field = ',f,' kN/m^3 ')\n",
+      "print'%s %.1f %s'% ('relative compaction in the field = ',Rc,'')\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "dry unit weight of compaction in the field =  18.55  kN/m^3 \n",
+        "relative compaction in the field =  97.7 \n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Ex4-pg155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import math\n",
+      "#calculate sustainabilty number\n",
+      "##initialisation of variables\n",
+      "D1= 0.36 ##mm\n",
+      "D2= 0.52 ##mm\n",
+      "D5= 1.42 ##mm\n",
+      "##calculations\n",
+      "Sn= 1.7*(math.sqrt((3./(D5)**2)+(1./(D2)**2)+(1./(D1)**2)))\n",
+      "##results\n",
+      "print'%s %.1f %s'% ('sustainabilty number = ',Sn,' ')\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "sustainabilty number =  6.1  \n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file