可用体积最大化×符合规范 Maximum Volume ×Algorithm Compliant with Regulations

本项目坐落在一条小巷的尽头，除了西南角的室外游泳池和邻近小学一侧外，场地被周围房屋包围，这些房屋的后部和侧面暴露出来的管道，为本项目营造出了一种神秘的围合感。在进行场地规划时，建筑师在场地的一侧留出了 2 米长的道路，建筑则被规划为沿场地边界的 U 形，进而在场地中央形成了庭院，以保留周围建筑环境形成的独特景观。

The site at the end of the cul-de-sac was surrounded by the rear and sides of the neighboring house with exposed piping, except for the outdoor swimming pool and sky of the adjacent elementary school on the southwest corner, creating a sense of enclosure. Leaving a 2M tangent road length, the planned building was placed in a U-shape along the site boundary in a circle to shield these landscapes.

▼项目坐落在一条小巷的尽头，the site at the end of the cul-de-sac © MASAO NISHIKAWA

▼内院，inner courtyard © MASAO NISHIKAWA

根据东京安全条例，建筑物的外周长仅能满足疏散路线所需的 50 厘米宽度，却无法实现合法的采光。为了避免房间之间的视线冲突，并确保受阳光照射面积能够满足法规要求，建筑物的内墙轮廓采用了“雁行”的形式，并将面向西南角的外立面最长化。这种策略使得建筑围合的庭院也在交错中向西南角的开放空间延伸。人行道的宽度符合东京安全条例要求的 2 米宽，其余的空间则将处于屋檐下或作为花园空间使用。

The outer perimeter of the building barely meets the width of 50cm required for evacuation routes in accordance with the Tokyo Safety Regulations, so legal daylighting cannot be expected. In order to avoid the clash of sight lines between the rooms and to secure a legally lightable surface, the inner wall of the building was made to run in a geese pattern, while the outer wall facing the only open space, the southwest corner, was made to be the longest. As a result, even the pathways on site within the site, which are in reverse relation to the building, also extend towards the open space at the southwest corner while staggering. The width of these walkways is to comply with the 2 m width required by Tokyo Safety Regulations, the remainder will be used for eaves and gardens.

▼场地鸟瞰，aerial view of the site © MASAO NISHIKAWA

▼建筑鸟瞰，aerial view of the project © MASAO NISHIKAWA