Page 695 - Air and Gas Drilling Manual

C-10 Air and Gas Drilling Manual
Table C-2: (Continued)
20.625 20.000 0.3125 67.80 159 367 349.0 598.3
20.625 19.875 0.3750 81.11 254 586 417.5 715.7
22.000 21.500 0.2500 58.07 74 170 298.9 512.5
22.000 21.375 0.3125 72.38 134 310 372.6 638.8
22.000 21.250 0.3750 86.61 215 498 445.8 764.3
22.500 22.000 0.2500 59.41 69 160 305.8 524.2
22.500 21.875 0.3125 74.05 126 292 381.2 653.5
22.500 21.750 0.3750 88.61 203 470 456.1 782.0
24.000 23.500 0.2500 63.41 58 134 326.4 559.6
24.000 23.375 0.3125 79.06 107 246 407.0 697.7
24.000 23.250 0.3750 94.62 172 398 487.1 835.0
24.500 24.000 0.2500 64.75 55 127 333.3 571.4
24.500 23.875 0.3125 80.73 101 233 415.6 712.4
24.500 23.750 0.3750 96.62 163 377 497.4 852.7
26.000 25.500 0.2500 68.75 47 108 353.9 606.7
26.000 25.375 0.3125 85.73 86 198 441.3 756.6
26.000 25.250 0.3750 102.63 140 323 528.3 905.7
26.500 26.000 0.2500 70.09 44 102 360.8 618.5
26.500 25.875 0.3125 87.40 82 188 449.9 771.3
26.500 25.750 0.3750 104.63 133 307 538.6 923.3
28.000 27.500 0.2500 74.09 38 88 381.4 653.8
28.000 27.375 0.3125 92.41 70 162 475.7 815.5
28.000 27.250 0.3750 110.64 115 265 569.5 976.4
28.500 28.000 0.2500 75.43 36 83 388.3 665.6
28.500 27.875 0.3125 94.08 67 155 484.3 830.2
28.500 27.750 0.3750 112.64 110 253 597.8 994.0
30.000 29.500 0.2500 79.43 31 72 408.9 701.0
30.000 29.375 0.3125 99.08 58 134 510.1 874.4
30.000 29.250 0.3750 118.65 95 221 610.8 1047.0
30.500 30.000 0.2500 80.77 30 69 415.8 712.8
30.500 29.875 0.3125 100.75 56 128 518.6 889.1
30.500 29.750 0.3750 120.65 91 211 621.1 1064.7
Note: Collapse strength values are based upon Timoshenko’s formula with 1% as a value of
ellipticity and 35,000 psi as the steel yield point. Strengths are based upon 35,000 psi yield
strength and 60,000 psi ultimate strength steel.