架构师提供的文本描述。这座房子位于北海道札幌市东南地区一个住宅区的斜坡路底部的一个角落里，那里有一些剩余的自然元素。该网站自然有1.4米的差距，在地面水平，但我们选择保持它在早期阶段，因为有限的预算。在考虑了几种方案后，我们确定了一种采用1.4米间距的分层方案，相当于地面高度的1/2，没有太大的困难。

Text description provided by the architects. The house is located on a corner site at the bottom of a sloping road in a residential district with some remaining natural elements, in the southeast region of Sapporo City, Hokkaido. The site naturally has a 1.4-meter gap at the ground level, but we chose to keep it untouched at an early stage due to the limited budget. After considering several schemes, we finalized a split level scheme utilizing the 1.4-meter gap, equivalent to 1/2 of the floor height, without much difficulty.

 © Koji Sakai

科吉酒井

 © Koji Sakai

科吉酒井

首先，我们在一个站点上放置了一个两层的盒子，这是一个适合所有需求的合适的卷，它的角指向站点的最低点。然后我们设置一个循环路径，使一个螺旋顺时针旋转在角落的位置。螺旋上升，进入盒子，所有的空间，包括私人空间，客厅，浴室等。沿着循环路线提供，创建分层次的构图.每个分割级别提供了不同的观点。沿着流通路线移动，一个人的视野会扩大或被阻碍，因此他/她的空间感知域会扩大或被压缩。这种空间转换将引发家庭成员与其社区之间密度的变化。

Firstly we placed a two-story box on a site, which is an appropriate volume to accommodate all requirements, with its corner directed towards the lowest point of the site. Then we set a circulation route, which makes a spiral rotating clockwise on the corner site. The spiral elevates itself and enters the box, and all spaces including private room, living room, bathroom etc. are provided along the circulation route, creating the split-level composition. Each split level offers a different viewpoint. Moving along the circulation route, one’s view expands or gets obstructed, and consequently the field of his/her spatial perception expands or gets compressed.  Such spatial transformation will trigger changes in density between family members and their community.

 © Koji Sakai

科吉酒井

Architects Keikichi Yamauchi architects and associates

Location Sapporo, Japan

Category Houses

Area 103.0 sqm

Project Year 2011

Photographs Koji Sakai