The objective of this study introduce improperly welded Vertical stiffner. Function of vertical stiffner is prevent buckling of web pannel. If Vertical stiffner have some defect, it Should be reviewed structural perspective. And Avoid immediate repair through structural review.

• 김대환(한국시설안전공단 고속도로실 차장) | Kim, Dae-Hwan
• 이재욱(한국시설안전공단 고속도로실 과장) | Lee, Jae-Wook
• 진상호(한국시설안전공단 고속도로실 직원) | Jin, Sang-Ho
• 박승수(한국시설안전공단 고속도로실 차장) | Park, Seung Soo