The purpose of this study is to improve the stack effect of the staircase and the failure to take into account the opening of the outside door of the staircase, which are the disadvantages of the existing smoke control only vestibule. As a result of the study, the new vestibule and the staircase simultaneous smoke control are equipped with an exhaust flap damper with an effective opening area of about 0.25 m² in the upper part of the staircase, and a ventilator-type air supply fan of about 5 m³/s in the lower part, and take measures to prevent overpressure in the staircase. If you use the new simultaneous smoke control method of the vestibule and staircase, you can achieve the following effects. First, it is possible to open the external entrance door. Second, it can reduce the stack effect. Third, the staircase door closes automatically without fail. And a new method of preventing overpressure was proposed for the vestibule.

1. 서 론
2. 본문
    2.1 이론적 고찰
    2.2 부속실 단독제연 방식
    2.3 부속실 및 계단실 동시 제연방식
3. 결론
4. References

• 김용광((주)한국안전기술 전무이사) | Yongkwang Kim (Executive Director, Korea Safety Tecnology Co. Ltd,)
• 손주달((사)한국위험물안전협회장) | Zudal Son (President, Korea Hazardous Safety Association)
• 김서영(우석대학교 소방,안전공학과 박사수료) | Seoyoung Kim (Ph.D, Candidate Fire and Safety Engineering, Woosuk University)
• 공하성(우석대학교 소방방재학과 교수) | Hasung Kong (Professor, Department of Fire and Disaster Prevention, Woosuk University) Corresponding author