抄録
This study examines the decision-making process undertaken to advance the development while preserving environmental and historical assets at the &ldquoDaikin Amica Karuizawa,” a retreat built on a culturally significant site in Karuizawa. In this project, functional requirements such as circulation and parking often conflicted with environmental conservation. To address these challenges, designers, contractors, and the client worked collaboratively through investigations, workshops, and technical verifications to visualize environmental impacts and share the trade-offs associated with prioritizing functionality. Early discussions compared multiple alternatives, leading to a consensus that environmental conservation should take precedence in cases of unavoidable conflict. In the design phase, decisions were made to minimize environmental impact, such as adjusting road alignments to preserve key existing trees. During the construction phase, on-site measurements were utilized to inform strategies for protecting root systems and restoring the terrain, ensuring the realization of the design intent. Furthermore, early contractor involvement accelerated technical validation and fostered a shared value system among stakeholders. This study demonstrates that integrating physical and operational measures, adopting dynamic decision-making, visualizing unfavorable options, and early involvement of contractors are effective for resolving conflicts between environmental conservation and functional requirements.
