Problem #2: A simply supported beam is to support a uniformly distributed load of 10 kips/ft. Select the lightest W shape. The span length is 32 ft. Deflection is not to exceed span/240. Neglect beam [1] weight and use ASTM A992 steel.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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TABLE A.1 U.S. Customary units
Designation A in.2
W40 X 277
W36 x 302
W36 x 194
W36 x 150
W33 x 118
W30 x 108
W30 x 99
W27 x 114
W27 x 94
W24 x 162
W24 x 104
W24 x 84
W24 x 76
W21 x 83
W21 x 73
W21 x 62
W21 x 50
W18 x 71
W18 x 60
W18 x 50
W18 x 40
W16 x 100
W16 x 45
W16 x 36
W16 x 26
in.
din.
by in.
S, in.¹ , in. 2, in.³
81 5
39.7
0.830 15.8
1.58
21,900
1100
16.4 1250
89.0
37.3
0.945 16.7
1.68
21,100
1130
15.4
1280
57.0
36.5
0.765 12.1
1.26
12,100 664
14.6
767
44.3
35.9
0.625 12.0
0.94
9040 504
14.3 581
34.7
32.9
0.550 11.5
0.74
5900
359
13.0
415
31.7
29.8
0.545 10.5
0.76 4470
299
11.9
346
29.0
29.7
0.520 10.5
0.67
3990
269
11.7
312
33.6
27.3
0.570 10.1
0.93
4080
299 11.0 343
27.6
26.9
0.490 10.0
0.745
3270 243
10.9 278
47.8
25.0
0.705 13.0
1.22
5170
414
10.4
468
30.7
24.1
0.500 12.8
0.75
3100
258
10.1
289
24.7 24.1
0.470
9.02 0.77
2370
196
9.79
224
22.4
23.9
0.440
8.99 0.68
2100
1.92
176
9.69 200
1830
24.4
21.4 0.515 8.36 0.835
171
8.67
196
1.83
8.3 0.74
21.5
1600
21.2 0.455
151 8.64
172
70.6
1.81
18.3
8.24 0.615
21.0
57.5
1330
0.400
127
1.77
8.54 144
14.7
0.380
6.53 0.535
20.8
984
24.9
8.18 110
7.64 1.3
18.5
7.64 0.81
0.495
127
1170
20.9
7.5 146
15.8 1.7
60.3
7.56 0.695
18.2 0.415
984
17.6
108
7.47
123
50.1 13.3 1.68
0.355
0.57
7.5
14.7
101
800
18.0
88.9 7.38
40.1
1.65
10.7
68.4 7.21
78.4
6.02 0.525
0.315
19.1
6.35 1.27
11.8
17.9
0.985
0.585 10.4
29.4
175
198 186
17.0
7.1
2.51
35.7
6.65
82.3
9.34 1.57
13.3
7.04 0.565
0.345
16.1
7.0 1.52
6.51 64.0
10.6
15.9
0.295 6.99 0.43
6.26
44.2
3.49 1.12
0.250 5.5
7.68 15.7
612
1490
586
448
0.345 301
94.5
1, in. S, in , in.
1040
132
3.58
1300
156
3.82
375
61.9 2.56
270
45.1
2.47
187
32.6
2.32
146
27.9
2.15
128
24.5
2.1
159
31.5
2.18
124
24.8
2.12
443
68.4
3.05
259
40.7
2.91
20.9
18.4
19.5
17.0
14.0
72.7
56.5
38.4
94.4
82.5
81.4
32.8
24.5
9.59
1.95
Transcribed Image Text:TABLE A.1 U.S. Customary units Designation A in.2 W40 X 277 W36 x 302 W36 x 194 W36 x 150 W33 x 118 W30 x 108 W30 x 99 W27 x 114 W27 x 94 W24 x 162 W24 x 104 W24 x 84 W24 x 76 W21 x 83 W21 x 73 W21 x 62 W21 x 50 W18 x 71 W18 x 60 W18 x 50 W18 x 40 W16 x 100 W16 x 45 W16 x 36 W16 x 26 in. din. by in. S, in.¹ , in. 2, in.³ 81 5 39.7 0.830 15.8 1.58 21,900 1100 16.4 1250 89.0 37.3 0.945 16.7 1.68 21,100 1130 15.4 1280 57.0 36.5 0.765 12.1 1.26 12,100 664 14.6 767 44.3 35.9 0.625 12.0 0.94 9040 504 14.3 581 34.7 32.9 0.550 11.5 0.74 5900 359 13.0 415 31.7 29.8 0.545 10.5 0.76 4470 299 11.9 346 29.0 29.7 0.520 10.5 0.67 3990 269 11.7 312 33.6 27.3 0.570 10.1 0.93 4080 299 11.0 343 27.6 26.9 0.490 10.0 0.745 3270 243 10.9 278 47.8 25.0 0.705 13.0 1.22 5170 414 10.4 468 30.7 24.1 0.500 12.8 0.75 3100 258 10.1 289 24.7 24.1 0.470 9.02 0.77 2370 196 9.79 224 22.4 23.9 0.440 8.99 0.68 2100 1.92 176 9.69 200 1830 24.4 21.4 0.515 8.36 0.835 171 8.67 196 1.83 8.3 0.74 21.5 1600 21.2 0.455 151 8.64 172 70.6 1.81 18.3 8.24 0.615 21.0 57.5 1330 0.400 127 1.77 8.54 144 14.7 0.380 6.53 0.535 20.8 984 24.9 8.18 110 7.64 1.3 18.5 7.64 0.81 0.495 127 1170 20.9 7.5 146 15.8 1.7 60.3 7.56 0.695 18.2 0.415 984 17.6 108 7.47 123 50.1 13.3 1.68 0.355 0.57 7.5 14.7 101 800 18.0 88.9 7.38 40.1 1.65 10.7 68.4 7.21 78.4 6.02 0.525 0.315 19.1 6.35 1.27 11.8 17.9 0.985 0.585 10.4 29.4 175 198 186 17.0 7.1 2.51 35.7 6.65 82.3 9.34 1.57 13.3 7.04 0.565 0.345 16.1 7.0 1.52 6.51 64.0 10.6 15.9 0.295 6.99 0.43 6.26 44.2 3.49 1.12 0.250 5.5 7.68 15.7 612 1490 586 448 0.345 301 94.5 1, in. S, in , in. 1040 132 3.58 1300 156 3.82 375 61.9 2.56 270 45.1 2.47 187 32.6 2.32 146 27.9 2.15 128 24.5 2.1 159 31.5 2.18 124 24.8 2.12 443 68.4 3.05 259 40.7 2.91 20.9 18.4 19.5 17.0 14.0 72.7 56.5 38.4 94.4 82.5 81.4 32.8 24.5 9.59 1.95
Problem #2:
A simply supported beam is to support a uniformly distributed load of 10 kips/ft. Select the
lightest W shape. The span length is 32 ft. Deflection is not to exceed span/240. Neglect beam
weight and use ASTM A992 steel.
[1]
SIMPLE BEAM: UNIFORMLY DISTRIBUTED LOAD
R
M max
414
Material
Steel ASTM A36 or
A501
Steel (high-strength
low-alloy) ASTM
A992
Steel AISI 1020
hot rolled
TABLE G.1 U.S. Customary units
Steel AISI 1040
hot-rolled
Stainless steel
(annealed)
Cast iron (gray)
Aluminum alloy
6061-76
Shear
Titanium alloy
Magnesium alloy
Brass (rolled)
Bronze (cast)
Copper
(hard drawn)
Concrete
Concrete
w/
Moment
Density
pcf
490
490
490
490
490
165
275
112
535
535
550
R
150
150
30,000
30,000
Mod. of Mod, of
Elasticity Rigidity
E
ksi
G
ksi
30,000
12,000
29,000
15,000
10.000
R=V
16,500
6500
14,000
12,000
15,000
V,
M max (at center)
30,000 11,500
3120
3605
M₁
Amax (at center),
12,000
11,500
11,600
6000
4000
6500
2400
6000
5000
6000
Tensile Yield
Strength
F₁
ksi
36
50
30
42
40
35
130
20
50
25
40
Ultimate Strength
ksi
Tens.
58
65
229 28 2985 S
20
140
Comp. Shear
80
8
3.0
4.0
888 33 8
100
50
w/2
8
38
$(1-x)
5114
384E1
Coeff, of
Thermal
Expansion a
in/in./F
* 10-6
6.5
24/(-2/²+1)
6.5
6.5
65
6.5
5.9
13.1
54
14,5
10.4
10.N
9.3
55
5.5
Poisson's
Ratio
"
0.25
0.25
0.25
025
0.25
0.26
0.33
0.34
0.34
0.35
0.35
0:20
0.30
Transcribed Image Text:Problem #2: A simply supported beam is to support a uniformly distributed load of 10 kips/ft. Select the lightest W shape. The span length is 32 ft. Deflection is not to exceed span/240. Neglect beam weight and use ASTM A992 steel. [1] SIMPLE BEAM: UNIFORMLY DISTRIBUTED LOAD R M max 414 Material Steel ASTM A36 or A501 Steel (high-strength low-alloy) ASTM A992 Steel AISI 1020 hot rolled TABLE G.1 U.S. Customary units Steel AISI 1040 hot-rolled Stainless steel (annealed) Cast iron (gray) Aluminum alloy 6061-76 Shear Titanium alloy Magnesium alloy Brass (rolled) Bronze (cast) Copper (hard drawn) Concrete Concrete w/ Moment Density pcf 490 490 490 490 490 165 275 112 535 535 550 R 150 150 30,000 30,000 Mod. of Mod, of Elasticity Rigidity E ksi G ksi 30,000 12,000 29,000 15,000 10.000 R=V 16,500 6500 14,000 12,000 15,000 V, M max (at center) 30,000 11,500 3120 3605 M₁ Amax (at center), 12,000 11,500 11,600 6000 4000 6500 2400 6000 5000 6000 Tensile Yield Strength F₁ ksi 36 50 30 42 40 35 130 20 50 25 40 Ultimate Strength ksi Tens. 58 65 229 28 2985 S 20 140 Comp. Shear 80 8 3.0 4.0 888 33 8 100 50 w/2 8 38 $(1-x) 5114 384E1 Coeff, of Thermal Expansion a in/in./F * 10-6 6.5 24/(-2/²+1) 6.5 6.5 65 6.5 5.9 13.1 54 14,5 10.4 10.N 9.3 55 5.5 Poisson's Ratio " 0.25 0.25 0.25 025 0.25 0.26 0.33 0.34 0.34 0.35 0.35 0:20 0.30
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