架构师提供的文本描述。铁画廊是一座钢铁建筑，坐落在东京市中心的一小块土地上。这幢租户大楼由4层楼组成，其中包括一个古董艺术品交易商办公室。整栋建筑的总建筑面积小于100平方米。

Text description provided by the architects. Iron Gallery is a steel-made building standing in a small lot in the center of Tokyo. This tenant building consists of 4 stories, including an antique art dealer's office. The total floor area of the whole building is less than 100m2.

 Courtesy of Kensuke Watanabe Architecture Studio

渡边健介建筑工作室

建筑师、结构设计师和承包商从项目一开始就进行了仔细的讨论。由于这一过程，该项目得到了有效的实施，同时考虑到了审美形象、可行性和成本控制。

A careful discussion took place between the architect, structural designer, and the contractor from the very beginning of the project. The project was efficiently carried out due to this process, and the aesthetic image, feasibility and cost control were all taken into account concurrently.

 Courtesy of Kensuke Watanabe Architecture Studio

渡边健介建筑工作室

由于工地主干道交通繁忙，工作空间非常有限，大家都同意在这个项目中使用钢结构。这样，大部分的建筑零件都可以在工厂里制造，减少了在实际现场的工作量。上部结构直接焊接在钢管桩上。整个建筑高度的立面板都是在工厂里制造的，并带进了现场。一旦面板被设置，间隙被焊接成水密。现场的实际劳动仅为47天，从设置桩到完成建筑。

Since the site was facing a heavy traffic of arterial road and had very limited work space, all agreed on using steel construction for this project. This way, most of the construction parts could be fabricated in factories, minimizing the work at the actual site. Superstructure was welded directly on top of steel pipe piles. Facade panels with the height of the entire building were fabricated at the factory, and brought into the site. Once the panels were set, the gap was welded to be watertight. Actual labor at the site was only 47 days from setting the piles to the completion of the building.

 Courtesy of Kensuke Watanabe Architecture Studio

渡边健介建筑工作室

表面材料采用COR-10钢.外墙与场地边界的距离最小，因此免维护材料是合适的.陈年的铜十钢的红褐色也与建筑内容、古色古香相匹配。表面板是伪造的，创造了肋骨，使面板变硬，同时增加了由太阳的阴影所创造的精致外观。

COR-TEN steel was used for facade material. The outer walls are set in minimum distance from site boundaries, so maintenance-free material was suitable. The reddish brown color of COR-TEN steel that ages in time also matched the building content, antique. The surface plate was forged, creating ribs that stiffened the panel while adding delicate appearance created by the shades of the sun.

 Courtesy of Kensuke Watanabe Architecture Studio

渡边健介建筑工作室

这个地点朝北，街道对面有明亮的绿色植物。通过一个大的洞口将城市的这种自然和周边景观吸引到建筑中来，一种扩展的氛围在小内部得到了实现。

The site is facing north and has bright greenery across the street. By inviting such nature and surrounding view of the city into the building through a large opening, an extended atmosphere is implemented into the small interior.