The demand for the structural system of reduction in story height increases because buildings are getting higher. The existing method of construction is not efficiency. Thus, it is hard to reduce the story height and this method cannot secure economics as expected. This study aims at developing the partially concrete-filled new type composite beam, which can efficiently resist against the negative moment and positive moment, for the reduction of deflection. Through case studies on loading of concentrated load and uniformly distributed load to fixed beam, we could find the most efficient ratio of moment of inertia. Consequently the gap space between middle and end beam can be used as facilities installation, moreover the suggested Omega beam system is expected to get the effect of reduction in story height as well as reduction of quantity.

ABSTRACT
 1. 서 론
 2. OMB의 최적 설계
 3. 성능 평가
  3.1 OMB system의 형상 개발
  3.2 단면 성능
  3.3 현장 적용성 검토
 4. 결론
 References

• 윤명호(공주대학교 건축공학과) | Yoon Myung Ho
• 이윤희(공주대학교 건축공학과) | Lee Yoon Hee
• 이예슬(공주대학교 건축공학과) | Lee Ye Seul