Civil Engineering CIVE3203 A Stru. Anal. Homework No. 4 1
Homework 4: Due 11:30AM, Friday, Nov. 18, 2011
Question 1 [30 marks]
Determine the vertical displacement of joint d in the following truss for each of the following
cases:
1. due to the applied loads, and
2. due to a temperature change of +50C of the bottom chord (members df and ef)
Use E = 200000 MPa,  = 12  10?6mm=mm=C. For the bar sizes, all members that are
in compression under the applied loads have A = 1000mm2 and all other members have A =
500mm2.
a b c
f e d
20kN 20kN
2m 2m
1.5m
Question 2 [20 marks]
Determine the horizontal displacement of point a due to the applied loads in each of the
frames in the following gure. The frames are not the same.
20kN
20kN
a
b c
3m
1m 1m
E = 200 000MPa
I = 100x106 mm4
A = 400mm2
20kN
20kN
a
b c
3m
1m 1m
E = 200 000MPa
I = 100x106 mm4
A = 400mm2
Structure A Structure B
$Id: hw4.tex 5044 2011-11-11 16:44:27Z nholtz $

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