Question: Problem 1 . The two - portal frame vault shown in Figure 1 comprises rigid frame members ABC and CDE, pinned together at C and

Problem 1.
The two-portal frame vault shown in Figure 1 comprises rigid frame members ABC and CDE, pinned together at C and to the foundations at cantilever support A and roller support E. Note that the vault as a whole possesses three equations of equilibrium, but that there are four unknown reactions.
Is the mechanical system always in equilibrium? Why?
Determine all reactions at A,C and E.
Figure 1
Problem 1 . The two - portal frame vault shown in

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