Loads for Steel Pipe Columns Machinery's Handbook, 31st Edition
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Allowable Concentric Loads for Steel Pipe Columns (Continued) DOUBLE-EXTRA STRONG STEEL PIPE Nominal Diameter, Inches 8 6 5 4 3 Wall Thickness, Inch 0.875 0.864 0.750 0.674 0.600 Weight per Foot, Pounds 72.42 53.16 38.55 27.54 18.58 Effective Length ( KL ), Feet a Allowable Concentric Loads in Thousands of Pounds 6 431 306 216 147 91 7 424 299 209 140 84 8 417 292 202 133 77 9 410 284 195 126 69 10 403 275 187 118 60 11 395 266 178 109 51 12 387 257 170 100 43 13 378 247 160 91 37 14 369 237 151 81 32 15 360 227 141 70 28 16 351 216 130 62 24 17 341 205 119 55 22 18 331 193 108 49 19 321 181 97 44 20 310 168 87 40 22 288 142 72 33 24 264 119 61 26 240 102 52 28 213 88 44 EFFECTIVE LENGTH FACTORS ( K ) FOR VARIOUS COLUMN CONFIGURATIONS
(a)
(b)
(c)
(d)
(e)
(f)
Buckled shape of column is shown by dashed line
Theoretical K value
0.5
0.7
1.0 1.2
1.0 1.0
2.0
2.0 2.0
Recommended design value when ideal conditions are approximated
0.65
0.80
2.10
Rotation fixed and translation fixed Rotation free and translation fixed Rotation fixed and translation free Rotation free and translation free
End condition code
Load tables are given for 36 ksi yield stress steel. No load values are given below the heavy hori zontal lines, because the Kl / r ratios (where l is the actual unbraced length in inches and r is the governing radius of gyration in inches) would exceed 200. Data from “Manual of Steel Construction,” 8th ed., 1980, with permission of the American Insti tute of Steel Construction (AISC).
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