e same coefficient of thermal expar temperature change needed on temperature changes take place g at "e" as shown below
e same coefficient of thermal expar temperature change needed on temperature changes take place g at "e" as shown below
Residential Construction Academy: House Wiring (MindTap Course List)
4th Edition
ISBN:9781285852225
Author:Gregory W Fletcher
Publisher:Gregory W Fletcher
Chapter1: Residential Workplace Safety
Section: Chapter Questions
Problem 12RQ
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Transcribed Image Text:Prob.
For the truss shown below:
g
All bar equal area = A
All bars the same modulus of elasticity = E
All bars the same coefficient of thermal expansion = a
L
e
d.
L
L
a) Let bar “bg" be heated by 100 degrees centigrade - determine the temperature change needed on
bar “ag" so that point “b" doesn't move vertically (i.e. when both temperature changes take place
the vertical movement of point b is zero).
b) Compute the vertical movement of point "b" due to the load acting at "e" as shown below
g
h
e
d.
60 kips
L
L
L
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