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226 STRENGTH OF MATERIALS.
TABLE No. 27.—Safe Load on Pillars Having Square
Ends Well Fitted.
(10 is used as Factor of Safety).
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I. II. III. IV. V. VI. VII. VIII. IX. X.
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3585 252 3567 252 7692 540 7624 536 476 34
6 3567 251 3549 250 7339 512 7105 500 438 30 6
8 3545 250 3510 247 6896 484 6536 460 398 28 8
10 3512 247 3462 243 6400 450 5926 417 357 25 10
12 3475 244 3404 239 5882 413 5314 374 317 22 12
14 3432 241 3338 235 5369 371 4745 333 280 20 14
16 3383 238 3266 230 4878 343 4226 297 248 17 16
18 3332 234 3187 224 4420 311 3749 264 218 15 18
20 3273 230 3103 218 4000 281 3333 234 192 13 20
22 3211 226 3018 212 3620 255 2969 208 170 12 22
24 3147 221 2926 206 3279 230 2653 186 151 10.6 24
26 3080 216 2834 199 2974 211 2376 167 135 9.5 26
28 3010 211 2741 192 2703 190 2137 150 121 8.5 28
30 2938 206 2647 186 2462 173 1928 136 109 7.6 30
32 2866 201 2554 180 2247 158 1745 123 98 6.9 32
34 2793 196 2462 173 2056 145 1585 111 88 6.2 34
36 2719 191 2370 167 1887 133 1440 102 81 5.7 36
38 2645 186 2288 160 1735 122 1321 93 74 5.2 38
40 2571 181 2195 154 1600 112 1212 85 67 4.7 40
42 2498 176 2111 148 1479 104 1113 78 62 4.3 42
44 2426 171 2029 143 1370 96 1028 74 57 4 44
46 2354 166 1950 137 1272 89 952 67 53 3.8 46
48 2284 161 1874 132 1183 83 882 62 49 3.4 48
50 2215 155 1800 127 1103 78 820 58 45 3.2 50
This table is intended, in connection with Table No. 24, to
facilitate calculations for pillars of either wood or iron, and may-
be used with equal advantage for English or metric measures,
provided both diameter and length are taken by the same system.
For a round pillar divide the length by the diameter, but
for a square or rectangular pillar divide the length by the
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