For the purpose of increasing slab span, new composite beam with U-shaped compression element consisting of channel and concrete has been developed. Strength design procedures of the composite beam against construction and permanent loads have been proposed. Using these procedures, it is possible to design consistently of the developed composite beam.

• 천성철(인천대학교 도시건축학부 건축공학전공/도시과학연구원 연구원) | Chun Sung Chul