2) The horizontal beam is rigid, and the three bars have the same length. The bars AB and EF are made of aluminum (α = 12.8 x 10-6/ °F). The members are connected when the temperature is 50 °F. Then the temperature increase to 90 °F. Which of the following is the 1.5 m- 1.5 m- correct statement regarding state of stress of the bars at the new temperature? All the bars are in compression b. All the bars are in tension C. Bars AB and EF are in tension, and bar CD is in compression d. Bars AB and EF are in compression, and bar CD is in tension al B st D al 2m

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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(2) The horizontal beam is rigid, and the three bars have the same length. The bars AB and EF are made of
aluminum (α = 12.8 x 10-6/ °F). The members are connected when the temperature is 50 °F. Then the
temperature increase to 90 °F. Which of the following is the
-1.5 m- +
-1.5 m
correct statement regarding state of stress of the bars at the new
temperature?
a. All the bars are in compression
b. All the bars are in tension
C. Bars AB and EF are in tension, and bar CD is in compression
d. Bars AB and EF are in compression, and bar CD is in tension
al
B
st
D
al
• D
F
E
2m
Transcribed Image Text:(2) The horizontal beam is rigid, and the three bars have the same length. The bars AB and EF are made of aluminum (α = 12.8 x 10-6/ °F). The members are connected when the temperature is 50 °F. Then the temperature increase to 90 °F. Which of the following is the -1.5 m- + -1.5 m correct statement regarding state of stress of the bars at the new temperature? a. All the bars are in compression b. All the bars are in tension C. Bars AB and EF are in tension, and bar CD is in compression d. Bars AB and EF are in compression, and bar CD is in tension al B st D al • D F E 2m
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