Steel Designers Manual - TheBestFriend.org

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Steel Designers' Manual - 6th Edition (2003)
1180 Dimensions and properties
UNIVERSAL BEARING PILES
REDUCED PLASTIC MODULUS UNDER AXIAL LOAD
xtx
Section Plastic Major Axis Reduced Modulus Plastic Minor Axis Reduced Modulus
Designation Modulus
Modulus
Axis
x-x
Lower Values
Of n
Change
Formula
Higher Values
Of n
Axis
y-y
Lower Values
Of n
Change
Formula
Higher Values
Of n
At n =
At n =
cm 3
K1 K2 K3 K4 cm 3
K1 K2 K3 K4
356 ¥ 368 ¥ 174 # 3190 3190 6040 0.294 324 11.4 1500 1500 339 0.331 3010 0.394
356 ¥ 368 ¥ 152 # 2770 2770 5270 0.295 249 12.8 1290 1290 263 0.328 2620 0.390
356 ¥ 368 ¥ 133 # 2410 2410 4600 0.295 192 14.5 1120 1120 204 0.324 2280 0.386
356 ¥ 368 ¥ 109 # 1960 1960 3760 0.296 130 17.5 903 903 139 0.320 1870 0.380
305 ¥ 305 ¥ 223 # 3650 3650 6650 0.296 619 6.75 1680 1680 597 0.361 3320 0.395
305 ¥ 305 ¥ 186 # 3000 3000 5500 0.298 437 7.89 1370 1370 428 0.353 2740 0.387
305 ¥ 305 ¥ 149 # 2370 2370 4380 0.301 285 9.60 1070 1070 283 0.346 2180 0.378
305 ¥ 305 ¥ 126 # 1990 1990 3690 0.302 206 11.2 885 885 207 0.340 1830 0.371
305 ¥ 305 ¥ 110 # 1720 1720 3210 0.303 158 12.7 762 762 159 0.336 1590 0.366
305 ¥ 305 ¥ 95 # 1470 1470 2750 0.305 118 14.5 648 648 120 0.334 1380 0.358
305 ¥ 305 ¥ 88 # 1360 1360 2530 0.307 102 15.6 595 595 104 0.334 1280 0.351
305 ¥ 305 ¥ 79 # 1220 1220 2300 0.303 82.4 17.3 531 531 84.3 0.328 1140 0.354
254 ¥ 254 ¥ 85 # 1090 1090 2040 0.300 113 11.2 498 498 115 0.338 1030 0.375
254 ¥ 254 ¥ 71 # 904 904 1700 0.300 79.2 13.3 409 409 81.8 0.332 851 0.370
254 ¥ 254 ¥ 63 # 799 799 1520 0.298 62.7 14.8 360 360 65.1 0.327 752 0.369
203 ¥ 203 ¥ 54 # 557 557 1050 0.298 56.8 11.3 252 252 57.9 0.335 518 0.378
203 ¥ 203 ¥ 45 # 459 459 862 0.301 39.8 13.4 206 206 40.9 0.332 431 0.367
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n = F/(A pY), where F is the factored axial load, A is the gross cross sectional area and pY is the design strength of the section.
For lower values of n, the reduced plastic modulus, Sr = K1 - K2.n 2 , for both major and minor axis bending.
For higher values of n, the reduced plastic modulus, Sr = K3(1 - n) (K4 + n), for both major and minor axis bending.