Steel box girders are to be fabricated using plates 1 in thick to form a box section with an overall depth of 50 in and an overall width of 20 in. Two alternatives are shown. PL 48 X 1 PL 20 X 1 PL 50 X 1 A. near the support of girder I PL 18 X 1 girder I girder II In girder I, the flanges are formed from plates 20 in wide, while girder Il uses plates 18 in wide. The flanges are to be attached to the web plates using partial penetration groove welds. If the box girder is used on a simply supported and uniformly loaded span, the location and connection point that would experience the largest weld stress is