3_ch 20 Mechanical Design budynas_SM_ch20

3_ch 20 Mechanical Design budynas_SM_ch20 -...

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Chapter 20 3 20-4 (a) yf f y fy 2 / ( N w ) f ( y ) g ( y ) 5.625 1 5.625 31.64063 5.625 0.072 727 0.001 262 0.000 295 5.875 0 0 0 5.875 0 0.008 586 0.004 088 6.125 0 0 0 6.125 0 0.042 038 0.031 194 6.375 3 19.125 121.9219 6.375 0.218 182 0.148 106 0.140 262 6.625 3 19.875 131.6719 6.625 0.218 182 0.375 493 0.393 667 6.875 6 41.25 283.5938 6.875 0.436 364 0.685 057 0.725 002 7.125 14 99.75 710.7188 7.125 1.018 182 0.899 389 0.915 128 7.375 15 110.625 815.8594 7.375 1.090 909 0.849 697 0.822 462 7.625 10 76.25 581.4063 7.625 0.727 273 0.577 665 0.544 251 7.875 2 15.75 124.0313 7.875 0.145 455 0.282 608 0.273 138 8.125 1 8.125 66.01563 8.125 0.072 727 0.099 492 0.106 72 55 396.375 2866.859 For a normal distribution, ¯ y = 396 . 375 / 55 = 7 . 207,
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