1) The truss (containing 12 pin joints, A, B, C, ... L) shown in the figure is simply supported at points H and L that are 4 meters apart. Angles A В C between different truss members are either 90° or 45° and the member F lengths are either 1 m or m. a) Compute the support reactions when P = 4 kN b) Draw a free body diagram from which internal forces in AB, EJ and IJ H J IK can be obtained. c) From the free body diagram of part b obtain forces in members AB, EJ and IJ (indicate if the internal forces are tension or compression) d) List all zero force members that carry no load. P (a) 2 (b) 3 (c) 3 (d) 2 RH = FAB = RL = FEJ = Fj =
1) The truss (containing 12 pin joints, A, B, C, ... L) shown in the figure is simply supported at points H and L that are 4 meters apart. Angles A В C between different truss members are either 90° or 45° and the member F lengths are either 1 m or m. a) Compute the support reactions when P = 4 kN b) Draw a free body diagram from which internal forces in AB, EJ and IJ H J IK can be obtained. c) From the free body diagram of part b obtain forces in members AB, EJ and IJ (indicate if the internal forces are tension or compression) d) List all zero force members that carry no load. P (a) 2 (b) 3 (c) 3 (d) 2 RH = FAB = RL = FEJ = Fj =
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1) The truss (containing 12 pin joints, A, B, C, ... L) shown in the figure is
simply supported at points H and L that are 4 meters apart. Angles
A
between different truss members are either 90° or 45° and the member
lengths are either 1 m or
m.
H
a) Compute the support reactions when P = 4 kN
b) Draw a free body diagram from which internal forces in AB, EJ and IJ
can be obtained.
c) From the free body diagram of part b obtain forces in members AB, EJ and IJ
(indicate if the internal forces are tension or compression)
d) List all zero force members that carry no load.
(a)
(b)
3
(c)
3
(d)
2
RH =
FAB =
RL =
FEJ =
Fj =
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