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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Ch:10 Pipes and pipe joints"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 10-1 - Page 295"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " t is 12.5 mm     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import sqrt\n",
+    "sigta=140/2#\n",
+    "nt=0.75#\n",
+    "#Let the flow rate be Q\n",
+    "Q=0.25#\n",
+    "v=1.2#\n",
+    "D=1.13*sqrt(Q/v)#\n",
+    "D=520#\n",
+    "p=0.7#\n",
+    "C=9#\n",
+    "t=(p*D)/(2*sigta*nt)+C#\n",
+    "print \" t is %0.1f mm     \"%(t)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 10-2 - Page 295"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " Pr is 302.25 kN     \n",
+      "\n",
+      " D1 is 250 mm     \n",
+      "\n",
+      " D2 is 392.6 mm     \n",
+      "\n",
+      " CD is 252.6 mm     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import pi,sqrt\n",
+    "p=3*8#\n",
+    "sigta=60#\n",
+    "d=150#\n",
+    "t=d/2*sqrt(((sigta+p)/(sigta-p))-1)#\n",
+    "t=75*sqrt((84/36)-1)#\n",
+    "t=40#\n",
+    "do=d+(2*t)#\n",
+    "D=d+(2*t)+20#\n",
+    "w=10#\n",
+    "Ds=d+(2*w)#\n",
+    "P=pi*(Ds**2)*8/4#\n",
+    "sigp=310#\n",
+    "FOS=4#\n",
+    "sigb=77.5#\n",
+    "At=P/(sigb*2)#\n",
+    "At=1300#\n",
+    "D=250#\n",
+    "db=45#\n",
+    "b=D#\n",
+    "a=1.8*b#\n",
+    "CD=D+(2*db*1.2)#\n",
+    "sigp=310#\n",
+    "Pr=0.75*sigp*At#\n",
+    "Pr=Pr*10**-3#\n",
+    "t=40#\n",
+    "D1=d+(2*t)+20#\n",
+    "D2=D1+(4.6*31)#\n",
+    "CD=D2-((3*t)+20)#\n",
+    "print \" Pr is %0.2f kN     \"%(Pr)#\n",
+    "print \"\\n D1 is %0.0f mm     \"%(D1)#\n",
+    "print \"\\n D2 is %0.1f mm     \"%(D2)#\n",
+    "print \"\\n CD is %0.1f mm     \"%(CD)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 10-3 - Page 296"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " d is 50 mm     \n",
+      "\n",
+      " t is 10 mm     \n",
+      "\n",
+      " B is 127 mm     \n",
+      "\n",
+      " R is 22.5 mm     \n",
+      "\n",
+      " Y is 40.66 mm     \n",
+      "\n",
+      " tf is 44 mm     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from __future__ import division\n",
+    "from math import sqrt,pi\n",
+    "p=14#\n",
+    "d=50#\n",
+    "sigyp=270#\n",
+    "FOS=3#\n",
+    "sigta=sigyp/FOS#\n",
+    "pt=2*p#\n",
+    "t=d/2*sqrt(((sigta+pt)/(sigta-pt))-1)#\n",
+    "t=10#\n",
+    "D1=d+(2*t)#\n",
+    "Ds=D1+20#\n",
+    "P=pi*(Ds**2)*p/4#\n",
+    "sigba=380/4#\n",
+    "At=P/(4*sigba)#\n",
+    "At=245#\n",
+    "db=20#\n",
+    "Dd=70+(2*20)+5#\n",
+    "R=db+2.5#\n",
+    "B=(Dd/sqrt(2))+(2*(db+2.5))#\n",
+    "B=127#\n",
+    "Y=Dd/(2*sqrt(2))#\n",
+    "Rm=34.12#\n",
+    "M=(P*Y/2)+(P*Rm/pi)#\n",
+    "sigfa=250/5#\n",
+    "b=127/70#\n",
+    "Z=b/6#\n",
+    "tf=sqrt(M/(sigfa*Z))#\n",
+    "tf=44#\n",
+    "print \" d is %0.0f mm     \"%(d)#\n",
+    "print \"\\n t is %0.0f mm     \"%(t)#\n",
+    "print \"\\n B is %0.0f mm     \"%(B)#\n",
+    "print \"\\n R is %0.1f mm     \"%(R)#\n",
+    "print \"\\n Y is %0.2f mm     \"%(Y)#\n",
+    "print \"\\n tf is %0.0f mm     \"%(tf)#"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## exa 10-4 - Page 297"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " D is 200 mm     \n",
+      "\n",
+      " t is 18 mm     \n",
+      "\n",
+      " Y is 18.5 mm     \n",
+      "\n",
+      " tf is 22 mm     \n",
+      "\n",
+      " Deff is 267 mm     \n"
+     ]
+    }
+   ],
+   "source": [
+    "from math import tan,sqrt,pi\n",
+    "p=1.25#\n",
+    "D=200#\n",
+    "nt=0.75#\n",
+    "C=9#\n",
+    "sigta=20#\n",
+    "t=(p*D)/(2*sigta*nt)+C#\n",
+    "t=18#\n",
+    "D1=D+(2*t)#\n",
+    "dr=D1+10#\n",
+    "sigp=310#\n",
+    "sigba=sigp/4#\n",
+    "db=16#\n",
+    "Db=dr+32+5#\n",
+    "Do=Db+(2*db)#\n",
+    "P=pi*(251+db)**2*1.25/4#\n",
+    "n=6#\n",
+    "Y=(Db-dr)/2#\n",
+    "M=P/n*Y#\n",
+    "Z=dr*tan(30*pi/180)/6#\n",
+    "tf=sqrt(M/(sigta*Z))#\n",
+    "tf=22#\n",
+    "Deff=dr+db+5#\n",
+    "print \" D is %0.0f mm     \"%(D)#\n",
+    "print \"\\n t is %0.0f mm     \"%(t)#\n",
+    "print \"\\n Y is %0.1f mm     \"%(Y)#\n",
+    "print \"\\n tf is %0.0f mm     \"%(tf)#\n",
+    "print \"\\n Deff is %0.0f mm     \"%(Deff)#"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.9"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}