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Pin Connected Member - 0.63 in be Effective Width

Thread starter Howlyn2
Start date Yesterday at 2:00 PM

Yesterday at 2:00 PM

Howlyn2

Structural

Hello,
Reviewing AISC Eqn. (D5-1) the term be is introduced as be = 2t+0.63 (in.). This goes into a simple area calculation to calculate tensile rupture on the effective area. Where did the additional 0.63 value come from? I have seen some references to a stress concentration increase, but I am not entirely sure. Any guidance is appreciated.