Analysis of Non-sway type portal frame by Kani's Method (Rotation Contribution Method)
(Initially fixed end moments are obtained by considering Support as fixed and individual member as a fixed beam,
So for Member AB and CD it doesn't carry any type of loading hence Moments are taken as zero.
And the member BC carries udl of 100kN/m over its span of 6m, hence FEM in BC are obtained by using equation M^ab=M^bc=wL2/12)
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