Question: The plastic collapse load is found to be P = 4 Mp / L for the following portal frame to form a collapse mechanism. Check

The plastic collapse load is found to be P

= 4

/

L for the following portal frame to form a collapse mechanism. Check whether the yield condition is satisfied or not by sketching the corresponding bending moment diagram with key bending moments marked.

(

Introduce a roller support at E and a pin support at A

) .

The plastic collapse load is found to be P = 4 Mp

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