This study proposes the equation of development length of GFRP bar using regression analysis and each variable(concrete compression strength, the position of the GFRP bar, cross sectional area) in the equation of development length confirms the effect on the development length. If the bar is located in the lower, development length is shorter. In the case of concrete compression strength is the bigger, the development length get the shorter. But the case of cross sectional area has a minimal effects on the development length.

• 박병학(강남대학교 건축공학과 학부 4학년) | Park, Byung Hak
• 하상수(강남대학교 건축공학과 교수, 공학박사) | Ha, Sang Su