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{
"metadata": {
"name": "",
"signature": "sha256:54ddb8c76d55d78e9f237ddb7f5823ac10a3585adf1b3932a3b8cc9352fd8e76"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 10:Braced Cuts"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex10.1: pg-511"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#example 10.1 : \n",
"\n",
"Gamma=18.0;\n",
"H=7.0;\n",
"sigmaa=0.3*Gamma*H;\n",
"print\"maximum pressure intensity in kN/m^2 is\",sigmaa ;\n",
"#partb\n",
"A=54.02;\n",
"B1=1.0/2*1.75*37.8+37.8*1.75-A;\n",
"B2=45.2;\n",
"C=54.02;\n",
"s=3.0; #spacing\n",
"Pa=C*s;\n",
"print \"strut loads in kN is\",Pa\n",
"Pb=(B1+B2)*s;\n",
"print \"strut loads in kN is\",Pb\n",
"Pc=C*s;\n",
"print \"strut loads in kN is\", Pc\n",
"#partc\n",
"Me=45.2*1.196-37.8*1.196*1.196/2;#Me=Mmax\n",
"Sall=170e3;#sigmaall\n",
"S=Me/Sall;\n",
"print \"section modulus in m^3/m is \",round(S,7)\n",
"#partd\n",
"Mmax=(B1+B2)*s**2.0/8;\n",
"S=Mmax/Sall;\n",
"print\"section modulus in m^3/m is\",round(S,6)\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"maximum pressure intensity in kN/m^2 is 37.8\n",
"strut loads in kN is 162.06\n",
"strut loads in kN is 271.215\n",
"strut loads in kN is 162.06\n",
"section modulus in m^3/m is 0.000159\n",
"section modulus in m^3/m is 0.000598\n"
]
}
],
"prompt_number": 11
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex10.2:pg-514"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#example 10.2\n",
"\n",
"import math\n",
"phi=35.0;\n",
"Gamma=17.0; # kN/m^3\n",
"s=4; #spacing in m\n",
"H=9;\n",
"Ka=(math.tan(45*(math.pi/180)-35*(math.pi/(180.0*2))))**2\n",
"sigma=0.65*Gamma*Ka*H\n",
"A=sigma*5*5.0/6;\n",
"B1=sigma*5-A;\n",
"C=sigma*4*4/6.0; \n",
"B2=sigma*s-C;\n",
"Pa=A*s;\n",
"Pb=(B1+B2)*s;\n",
"Pc=C*s;\n",
"print \"strut loads at A in kN is\",round(Pa,2)\n",
"\n",
"print \"strut loads at B in kN is\",round(Pb,2)\n",
"\n",
"print \"strut loads at C in kN is\",round(Pc,2)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"strut loads at A in kN is 449.17\n",
"strut loads at B in kN is 233.57\n",
"strut loads at C in kN is 287.47\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex10.3:pg-523"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#example 10.3\n",
"\n",
"import math\n",
"q=0;\n",
"Gamma=17; # in KN/m^3\n",
"B=3.0 # in meter\n",
"L=20; # in meter\n",
"c=30;# in KN/m^3\n",
"T=1.5;# in meter\n",
"H=5.5;# in meter\n",
"B1=B/2;#B'\n",
"B11=T*math.sqrt(2);#B''\n",
"FS=(5.14*c*(1+B11*0.2/L)+c*H/B1)/(Gamma*H+q) # from equation of factor of safety\n",
"print\"factor of safety is\",round(FS,2)\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"factor of safety is 2.86\n"
]
}
],
"prompt_number": 18
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Ex10.4:pg-529"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#example 10.4\n",
"\n",
"\n",
"L1=5; # in meter\n",
"L2=4;# in meter\n",
"B=5;# in meter\n",
"h=4.5;# in meter\n",
"icr=1 #\n",
"iexit= 0.54*h/L2\n",
"FOS=icr/iexit # Factor of safety\n",
"print \"The Factory of safety is\",round(FOS,3)\n",
"\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The Factory of safety is 1.646\n"
]
}
],
"prompt_number": 23
}
],
"metadata": {}
}
]
}
|
