5. Select the lightest W12 shape for a column subjected to an axial compressive load of 730,000 Ibs. The unbraced length of the column is 22 feet and uses fixed connections. Use the AISC column tables.
5. Select the lightest W12 shape for a column subjected to an axial compressive load of 730,000 Ibs. The unbraced length of the column is 22 feet and uses fixed connections. Use the AISC column tables.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question

Transcribed Image Text:5. Select the lightest W12 shape for a column subjected to an axial compressive
load of 730,000 Ibs. The unbraced length of the column is 22 feet and uses
fixed connections. Use the AISC column tables.

Transcribed Image Text:Table 4-1 (continued)
Available Strength in
Axial Compression, kips
Fy = 50 ksi
W12
W-Shapes
Shape
W12x
Ib/tt
190
170
152
136
120
106
Pale Pa ePn Pae P OePa P/sle Pa Pale dePa
Design
LAFD ASO LRFD ASD LRFD ASD
LRFD ASD
2250 1340 2010 1190 1800 1050 1580
LRFD ASD LRFO
934 1400
ASD
1680 2520 1500
1620 2430 1440 2170 1290 1940 1150 1730 1010 1520
6
1600 2400 1420 2140 1270
1570 2360 1400
898
886
871
855
838
1350
1910 1130 1710 1000 1500
1480
1450
1330
2110 1250 1880 1120
1550 2320 1380 2070 1230 1850 1100 1650
1520 2280 1350 2030 1210 1810 1080 1620
1490 2230 1320 1990 1180 1770 1050 1580
1680
984
966
947
1310
1290
1260
10
1420
11
12
13
14
15
925 1390
903
879
854
819 1230
799 1200
1170
1130
1100
1450 2180 1290
1420 2130 1260
1380 2070 1230
1340 2010 1190 1790 1060 1590 942
1300 1950 1150
1260 1890 1120 1680
1210 1820 1080
1170 1760 1040
1130 1690 997
1030 1560 916
944
855
767
684
1940 1150 1730 1030 1540
1690 1000 1500
1460
1420
1360
1320
1900 1120
1840 1090 1640 972
777
1280 755
828 1240 | 731
1730 1030 1540 912
992
957
921
885
1370
1320
1280
1230
1180
800
773
744
715
686
1200
707
682
1060
16
17
1490 881
1440 849
1380 816
784
1160
1030
1620
1120
1070
1030
656
631
604
987
18
19
20
1560
1500
948
1330
908
22
24
26
28
30
1420 834
1280 754
1150 675
1030 600
1380
1250
1130
1010
902
811
737
665
595
527
1220 717
1110 651
999
894
793
586
523
462
1080
978
880
786
695
626
567
510
454
400
942
853
766
682
601
552
499
448
398
350
829
750
673
598
526
32
603
534
476
428
386
906
803
716
643
580
528
468
418
375
338
794
704
628
563
508
464
411
366
329
297
697
617
551
494
446
406
360
321
288
260
610
541
482
433
391
352
311
278
249
225
528
468
417
375
338
308
272
243
218
197
462
410
365
328
296
34
36
38
40
Properties
Pe, kips
Pw, kips/in.
Pub, kips
Pio, kips
49, ft
Lr. It
244
43.5 26.3
2120 3190 1580 2370 1170 1760 878
292
11.2
63.2
412
35.3 53.0 32.0
617
346
518
290
435
201
39.5 23.7
837
231
365
302
162
35.5 20.3 30.5
405
183
242
48.0 29.0
609
276
1320
957
567
852
551
455
11.4
78.5
684
367
11.3
70.6
439
347
11.5
87.3
11.1
56.5
11.0
50.7
Ay, in.
4. in.
, in.
y, in.
alty
Pa(KL/10°, k-in.
Pa(NL/10", k-in?
56.0
1890
589
3.25
1.79
54100
16900
50.0
1650
517
3.22
1.78
47200
14800
44.7
1430
454
3.19
1.77
40900
39.9
1240
398
3.16
1.77
35500
11400
35.2
1070
345
3.13
1.76
30600
31.2
933
301
3.11
1.76
26700
13000
9870
8620
ASD
LRFD
= 1.67
O 0.90
Effective length, KL (), with respect to least radius
'uogesk6
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