该项目对Can Biel的一座建造于19世纪末期的建筑进行了改造，设计的要求是保留既有建筑，并使其成为一座包含四户的住宅。

The project is based on the proposal that the existing building of Can Biel, a late 19th century construction, must be preserved and turned into 4 dwellings.

▼项目概览，Overall view © Andres Flajszer

该建筑是由石质的墙和4米高的横梁组成的，原有的楼板状况很糟糕，并且其开放高度并不能满足任务目标的需求。本项目是在保留现有体量的前提下向水平方向扩展楼板的部分。因此，最终该建筑长达60米，共计2层。

The building is made of stone walls and 4m beams, with very deteriorated slabs and open heights that are unsuitable for the intended uses. The proposal is to extend horizontally the section while preserving the existing volume. As a result, the building is 60 meters long and has 2 levels.

▼首层空间，Ground floor space © Andres Flajszer

▼客厅一角，Corner of the living room © Andres Flajszer

▼厨房，Kitchen © Andres Flajszer

从这样的角度来看，本设计通过新增的楼板和8米高的石墙为外部结构提供支撑力，并使现有的结构更加坚固。新的楼板使用了混合混凝土和木材的材料，还包括连接两个纵向石墙的金属支架。北部挡土墙被设计的具有渗透性和可见性，这种设计需要对首层的表面材料进行收集，并重新安排与这面墙接触的结构和装饰性元素。

From this perspective, the intervention involves reinforcing the existing construction through the new floor slabs and an external structure that provides a support for the 8m-high stone walls. The new slabs are designed with a mixed concrete-wood structure and include internal metal braces that link the two longitudinal stone walls. The permeability of the northern retaining wall is allowed in order to leave it visible. This decision requires a surface recollection on the ground floor and to manage the structural and finishing elements in contact with this wall.

▼连接两层的楼梯，Stairs connecting two floors © Andres Flajszer

在材料的使用方面，本项目以粗糙的材料为主导，并且除了砖砌部分和对现有墙壁和侧柱的重新定位之外，其余部分基本上都选择了干式施工的方法。这样做的目的有两个：一方面可以降低建设成本，只将资源用在必要的建设上；两一方面，是为了保留和重估原有建筑的历史记忆和价值，对轻质系统的改造使得对原有元素和修复元素的理解与区分成为可能。

In terms of materials used, the project is based on rough materials and, essentially, on dry construction, with the exception of the brickwork and the repointing of the existing walls and jambs. The objective is twice: on the one hand, to reduce construction costs, to build and allocate resources only to the essential; on the other hand, to preserve and revalue the historical memory of the original building, as the change to a lightweight system makes it possible to understand and differentiate the original elements from those of the restoration.

▼二层空间，First floor space © Andres Flajszer

▼楼梯，Stairs © Andres Flajszer

▼二层尽头的卫生间，Toilet © Andres Flajszer

最终，是关于室内空间的设计，设计者发现在处理如此小的结构性网格时，为了能够提供最大的宽度和开放的空间感，可以采取两个基本策略：首先是打开和释放部分内部空间，在其中创造出双重甚至三重空间；其次是充分利用所有现存的窗户，并且策略性地增加新的窗户，以提供视野和光照。通过这种双重的设计策略，来确保房屋的视野得到扩展，并在水平和垂直方向上扩大内部的使用空间。

Finally, regarding the interior spaces, it is found that, in dealing with such a small structural grid and with the aim of providing maximum width and sense of open space, two basic strategies have been used: The first is to open up and release the interior space in section, creating double and triple spaces; the second is to make the most of all the existing windows and to create new ones, which are strategically placed to provide views and sunlight. With this double strategy, we ensure that the views are extended and the feeling of more interior space is amplified both horizontally and vertically.

▼轴测剖面图，axonometric section © Sau Taller d’ Arquitectura

▼立面图和平面图，elevation and plan © Sau Taller d’ Arquitectura

photos: Andres Flajszer