架构师提供的文本描述。这所狭窄的房子是一对夫妇和他们的小孩住在日本大阪一个密集的建筑区。场地面积仅为3.4m，深度为13m。

Text description provided by the architects. This narrow house for a couple and their little child is located in a densely built-up area of Osaka, Japan. The size of the site is only width 3.4m and depth 13m.

 © Keishiro Yamada

(C)山田健一郎(Keishiro Yamada)

为了充分利用它，房子的框架是暴露的结构钢，盖薄耐火绝热板，并包括六层与分裂的水平。

To make full use of it, the house is framed in exposed structural steel, coverd with thin fire - resistant adiabatic panels, and contains six floors with split levels.

Lv.1(地下室层)是一个卧室，Lv.2(地面层)是一个车库，Lv.3是给小女孩的，Lv.4是一个居住空间，Lv.5是一个浴室，Lv.6是一个屋顶露台。

Lv.1 (basement level) is a bedroom, Lv.2(ground level) is a garage, Lv.3 is for the little girl, Lv.4 is a living space, Lv.5 is a bathroom, and Lv.6 is a roof terrace.

 © Keishiro Yamada

(C)山田健一郎(Keishiro Yamada)

膨胀的金属楼梯连接着每一层楼，并在里面传播阳光。在这所房子里，他们像鸟儿一样在树枝间摇摆。

The expanded metal stair connects each floors and spreads the sun light inside. In this house, they are living like birds swinging from branch to branch .

 © Keishiro Yamada

(C)山田健一郎(Keishiro Yamada)

Architects YYAA

Location Osaka, Japan

Category Houses

Architect in Charge Yoshihiro Yamamoto

Area 113.0 sqm

Project Year 2014

Photographs Keishiro Yamada