The two-bar structure shown is pinned at A, B, and C. A sign weighing 20 kN is suspended from bar BC at points D and E, which are located at 0.8 m and 0.4 m, respectively, from the ends of the bar BC. If member AB is a steel pipe with inside diameter 20 mm, determine the smallest permissible outer diameter of the member if the working stress in steel is not to exceed 140 MPa.
The two-bar structure shown is pinned at A, B, and C. A sign weighing 20 kN is suspended from bar BC at points D and E, which are located at 0.8 m and 0.4 m, respectively, from the ends of the bar BC. If member AB is a steel pipe with inside diameter 20 mm, determine the smallest permissible outer diameter of the member if the working stress in steel is not to exceed 140 MPa.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The two-bar structure shown is pinned at A, B, and C. A sign weighing 20 kN is suspended from bar BC at points D and E, which are located at 0.8 m and 0.4 m, respectively, from the ends of the bar BC. If member AB is a steel pipe with inside diameter 20 mm, determine the smallest permissible outer diameter of the member if the working stress in steel is not to exceed 140 MPa.
Transcribed Image Text:2.0 m
D
E
B
0.9 m-0.9 m-
0.8 m
0.4 m
W = 20 kN
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