7.59 7% 0.750 1.15 1% % Compute the moment of inertia for the built up section shown below about the strong axis only. (Group 2) - ½"x 4" I. Web Flange Distance Area, Depth, Work- able Gage k Thickness, 2 Width, Thickness, Shape A ki Kdes kart in.? in. in. in. in. in. in. in. in. in. in. W18x71 x65 x60° x55 20.9 18.5 182 0.495 2 19.1 18.4 18 0.450 /16 17.6 18.2 1840.415 /16 4 16.2 18.1 18% 0.390 /8 14.7 18.0 18 0.355 %% 7.64 7% 0.810 13/16 1.21 12 14 7.56 72 0.695 /16 1.10 1% 316 7.53 72 0.630 %8 1.03 1%16 13/16 /16 7.50 72 0.570 16 0.972 14 /8 152 32 1/16 13/18 x50 13/16 W18 x 65 Compact Nom- Section inal Wt. Torsional Axis X-X Axis Y-Y Properties Criteria ho J Cw S Ib/ft 2t in. in. in. in. 60.3 in. in. in. 3.49 in. 4700 in. 15.8 1.70 24.7 54.8 14.4 1.69 22.5 13.3 1.68 20.6 11.9 1.67 18.5 10.7 1.65 in. in. 2.05 17.7 2.03 17.7 2.02 17.5 2.00 17.5 1.98 17.4 in. 71 4.71 32.4 1170 65 5.06 35.7 1070 60 5.44 38.7 55 5.98 41.1 50 6.57 45.2 7.50 146 7.49 133 7.47 123 98.3 7.41 112 88.9 7.38 101 127 117 2.73 4240 984 108 50.1 2.17 3850 890 800 44.9 1.66 3430 3040 40.1 16.6 1.24
7.59 7% 0.750 1.15 1% % Compute the moment of inertia for the built up section shown below about the strong axis only. (Group 2) - ½"x 4" I. Web Flange Distance Area, Depth, Work- able Gage k Thickness, 2 Width, Thickness, Shape A ki Kdes kart in.? in. in. in. in. in. in. in. in. in. in. W18x71 x65 x60° x55 20.9 18.5 182 0.495 2 19.1 18.4 18 0.450 /16 17.6 18.2 1840.415 /16 4 16.2 18.1 18% 0.390 /8 14.7 18.0 18 0.355 %% 7.64 7% 0.810 13/16 1.21 12 14 7.56 72 0.695 /16 1.10 1% 316 7.53 72 0.630 %8 1.03 1%16 13/16 /16 7.50 72 0.570 16 0.972 14 /8 152 32 1/16 13/18 x50 13/16 W18 x 65 Compact Nom- Section inal Wt. Torsional Axis X-X Axis Y-Y Properties Criteria ho J Cw S Ib/ft 2t in. in. in. in. 60.3 in. in. in. 3.49 in. 4700 in. 15.8 1.70 24.7 54.8 14.4 1.69 22.5 13.3 1.68 20.6 11.9 1.67 18.5 10.7 1.65 in. in. 2.05 17.7 2.03 17.7 2.02 17.5 2.00 17.5 1.98 17.4 in. 71 4.71 32.4 1170 65 5.06 35.7 1070 60 5.44 38.7 55 5.98 41.1 50 6.57 45.2 7.50 146 7.49 133 7.47 123 98.3 7.41 112 88.9 7.38 101 127 117 2.73 4240 984 108 50.1 2.17 3850 890 800 44.9 1.66 3430 3040 40.1 16.6 1.24
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question

Transcribed Image Text:Compute the moment of inertia for the built up section
shown below about the strong axis only. (Group 2)
½"x 4"
Web
Flange
Distance
Area, Depth,
Work-
k T able
Gage
k
Thickness,
2
Thickness,
Width,
br
Shape
A
Kdes Kart
in.
7.64 7%8 0.810 13/16 1.21 12
1.15 1/16
in.?
in.
in.
in.
in.
in.
in.
in.
in.
in.
/% 152 32
W18x71
x65
x60
x55°
x50
20.9 18.5 1820.495 2
19.1 18.4 18% 0.450 16
17.6 18.2 184 0.415 /16
16.2 18.1 18e 0.390 38
14.7 18.0 18 0.355 %%
7.59 7%s 0.750 34
7/8
13/16
13/16
7.56 72 0.695 /16 1.10 1
16 7.53 72 0.630 %8 1.03 1%16
13/16
16 7.50 72 0.570 16 0.972 14
W18 × 65
Compact
Nom- Section
inal
Torsional
Axis X-X
Axis Y-Y
Properties
Criteria
ho
Wt.
by
Ib/ft 2t
71 4.71 32.4 1170
65 5.06 35.7 1070
60 5.44 38.7
55 5.98 41.1
50 6.57 45.2
Cw
S
in.
in. in.
in.
127
117
in.
in.
60.3
54.8
in.
15.8 1.70 24.7
14.4 1.69
13.3 1.68 20.6
in.
3.49
in.
in.
7.50 146
7.49 133
7.47 123
7.41 112
in.
in.
2.05 17.7
22.5 2.03 17.7
2.02 17.5
2.00 17.5
1.98 17.4
4700
2.73
4240
984
108
50.1
2.17
3850
890
98.3
44.9
11.9 1.67
18.5
1.66
3430
800
88.9 7.38 101
40.1
10.7 1.65
16.6
1.24
3040
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