A force of 18,500 lbs is applied to a 3/8 in. x 3/4 in. A572 high-strength steel bar having a grade of 50. (refer to AISC Table 2-5, next page) Determine a. whether the bar will plastically deform and b. whether the bar will experience necking.
A force of 18,500 lbs is applied to a 3/8 in. x 3/4 in. A572 high-strength steel bar having a grade of 50. (refer to AISC Table 2-5, next page) Determine a. whether the bar will plastically deform and b. whether the bar will experience necking.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A force of 18,500 lbs is applied to a 3/8 in. x 3/4 in. A572 high-strength steel
bar having a grade of 50. (refer to AISC Table 2-5, next page)
Determine
a. whether the bar will plastically deform and
b. whether the bar will experience necking.
Transcribed Image Text:PROBLEM No. 1
STRESS - STRAIN
Table 2-5
AISC Steel Construction Manual
Applicable ASTM Specifications
for Plates and Bars
Plates and Bars, in.
Fy
Yield Tensile to 0.75 to 1.25 1.5 2 to
Stress Stress" 0.75 1.25 to 1.5 to 2
(ksi)
Fu
over over over over over
2.5
over over over
4 to 5 5 to 6 6 to 8 over
Steel
ASTM
2.5
to 4
Type Designation
Туре
(ksi)
incl. incl. incl. incl. incl. incl. incl. incl. incl.
8.
32
58-80
A36
36
58-80
Gr. C
30
55-75
A283
Carbon
Gr. D
33
60-80
Gr. 50
50
65-100
A529
Gr. 55
Gr. 36
55
70-100
A709
36
58-80
Gr. 42
42
60
Gr. 50
50
65
Gr. 55
Gr. 60
Gr. 65
Gr. 50
A572
55
70
60
75
65
80
High-
Strength
Low-
A709
50
65
Gr. 36
36-52
58
A1043
Gr. 50
Alloy
50-65
65
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