The study used the whole-life carbon assessment method to conduct a thorough carbon-neutral evaluation of a standard steel structure. To further assess carbon emissions, 11 design-changed models were evaluated, with changes made to the span between beams and columns. The results of the carbon emission assessment showed savings of approximately 13.1% by implementing the stage of the beyond life cycle. Additionally, the evaluation of carbon emissions through design changes revealed a difference of up to 42.2%. These findings confirmed that recycling and structural design changes can significantly reduce carbon emissions by up to 48.6%, making it an effective means of achieving carbon neutrality. It is therefore necessary to apply the stage of beyond life cycle and structural change to reduce carbon emissions.

1. 서론
2. 전생애주기에 기반한 탄소 배출량평가
    2.1 전생애주기의 개요
    2.2 전생애주기에 따른 탄소 배출량 평가
3. 구조 변경에 따른 탄소 배출량 변동경향
    3.1 탄소 배출량 평가 결과
4. 결과 분석
5. 결론
감사의 글

• 송창현(학생회원, 고려대학교 건축사회환경공학과, 석사과정) | Song Chang-Hyun (School of Civil, Environmental, and Architectural Engineering, Korea University)
• 장아름(학생회원, 고려대학교 건축사회환경공학과, 박사수료) | Jang Arum (School of Civil, Environmental, and Architectural Engineering, Korea University)
• 주영규(정회원, 고려대학교 건축사회환경공학과 교수, 공학박사) | Ju Young K. (Department of Civil, Environmental, and Architectural Engineering, Korea University) Corresponding author