While checking the moment connection for a W beam to HSS16x16x5/8 column we found out that the wall of the HSS column fails due to plastification. Can we spec a internal diaphragm plate as thick as the W beam connecting and get away with it.The arch wast to use the HSS for aesthetics and the utilization ratio of the column in 0.93 so we cant reduce the width of the column.
Is there any calculation that needs to be done to check the internal diaphragm plate ?
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