Abstract
A group of private companies led by Toda Construction Company was selected as the joint research partner of "Renaissance Project" planned by UR (Urban Renaissance Agency) in 2008. In Renaissance Project, instead of the conventional "scrap and build" method, the existing housing complex in Mukogaoka 1, located in Sakai City, Osaka, is totally renovated and rejuvenated ("Danchi Saisei" in Japanese) through application of various challenging architectural technologies. In this paper, Toda and Osaka Gas introduce the basic plan and design concept in Mukogaoka 1, which was originally proposed by Toda group and improved by UR and Toda group. For instance, we reduce the floors of building from 5 to 3 in order to enhance the anti-seismic performance of the building. We also enrich the public space in the complex by retrofitting the original building shape in order to enhance communication and interaction among residents and to improve crime prevention performance. Various equipment and hardware including elevator, hot water supply system and heating system are added and replaced for reducing environmental impacts as well as for meeting needs of residentssuch as smaller family sizes and aging. (*) Toda group consists of Wakachiku Construction Comp any, Prof Suzuki, Kyoto Institute of Technology, Itsuro Hosida Space & urban Institute, Maitani Architects Studio, and Wada Structural Engineer Consultant.
