2.69 The bars AB, AC, and AD are pinned together as shown in the figure. Hori- zontal movement of the pin at A is prevented by the rigid horizontal strut AE. Cal- culate the axial force in the strut caused by the 10-kip load. For each steel bar, A = 0.3 in.2 and E= 29 x 106 psi. For the aluminum bar, A 0.6 in.? and E = 10 x 106 psi.

2.69 The bars AB, AC, and AD are pinned together as shown in the figure. Hori- zontal movement of the pin at A is prevented by the rigid horizontal strut AE. Cal- culate the axial force in the strut caused by the 10-kip load. For each steel bar, A = 0.3 in.2 and E= 29 x 106 psi. For the aluminum bar, A 0.6 in.? and E = 10 x 106 psi.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Beams and Frames

A beam is a horizontal structure or a member which is always subjected to transverse shear loads.

Question

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2.69 The bars AB, AC, and AD are pinned together as shown in the figure. Hori-
zontal movement of the pin at A is prevented by the rigid horizontal strut AE. Cal-
culate the axial force in the strut caused by the 10-kip load. For each steel bar,
A = 0.3 in.? and E = 29 × 106 psi. For the aluminum bar, A = 0.6 in.² and
E = 10 × 106 psi.

B
C
D
Aluminum
Steel
Steel
40°→20°%
10 ft
Rigid
E
A
10 kips
FIG. P2.69

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