北京一栋“墙体开裂、蟑螂横行、臭气熏天”的老楼，从拆除到原址建新，仅用46天

Core Viewpoint - The successful completion of the renovation project at No. 28, Sanlihe District, Xicheng District, Beijing, demonstrates the effectiveness of the "original demolition and reconstruction" approach, supported by advanced construction technologies that significantly reduce construction time and environmental impact [1][4]. Group 1: Project Overview - The new six-story residential building was completed in just 46 days, with residents moving into their new homes within five months [1][2]. - The project involved the collaboration of 54 households, who collectively agreed to the demolition and reconstruction process, highlighting the importance of community consensus [2][3]. Group 2: Construction Technology - The project utilized "intelligent construction-MiC technology," which allowed for the prefabrication of 90% of the building's components in a factory setting, leading to a 75% reduction in construction time compared to traditional methods [4]. - This innovative approach also resulted in a 75% decrease in on-site construction waste, a 25% reduction in material consumption, and a 30% cut in carbon emissions, showcasing a dual focus on efficiency and environmental sustainability [4]. Group 3: Community Engagement - Over two years of preliminary work included extensive communication and negotiation with residents to address their specific needs and preferences, resulting in tailored housing solutions [3]. - The project offered six customized housing layouts based on the original living conditions and requirements of the residents, ensuring satisfaction and compliance with government policies [3].