SIE/Home21是一个多功能的建筑。它也是一个雄心勃勃的社会住房项目，为那些很少有机会获得高质量住宅的社会成员提供244套特别实惠的住房。该项目是维也纳市 “快速住房计划”（Sofortwohnbau-Programm）的一部分；它是在20个月的特别短的时间内规划和建造的。正是这个项目的要求将其不同的功能集中在一个屋檐下。快速住房计划是对2015-2016年维也纳住房紧缩的回应；它为在未充分利用的商业区的房地产上临时搭建住房提供补贴。这种住房既可以由临时性的移动建筑组成，也可以由具有固定居住期限的永久性建筑组成。21号院属于后一种类型。这一事实是其中性多功能性的基础。该建筑将在其生命周期的前10年为城市提供住房，之后它必须能够经济地转化为商业地产。这一先决条件需要一个简单、快速和不影响使用的建筑。

SIE/Home21 is a multifunctional building. It is also an ambitious social housing project that provides 244 units of exceptionally affordable housing for members of society who rarely have access to quality dwellings. This project is a part of the City of Vienna’s “Rapid Housing Program” (Sofortwohnbau-Programm); it was planned and built in an exceptionally short period of 20 months. It was the demands of this program that brought its diverse functions together under one roof. The Rapid Housing Program was a response to Vienna’s housing crunch of 2015-2016; it subsidized the pro tempere erection of housing upon underutilized, commercially zoned real estate. This housing could either be composed of temporary, mobile constructions or comprise permanent buildings with fixed-term occupancy for housing. Home 21 fits to the latter category. This fact underlies its use-neutral multifunctionality. The building will provide the city with housing for the first 10 years of its lifecycle, after which it must be capable of being economically converted into commercial property. This precondition required a simple, rapid and use-neutral construction.

SlimBuilding®系统（Winfried Kallinger博士专利）是我们的答案。这种创新的复合系统将细长的钢柱与现浇的铁混凝土楼板结合起来，产生了既没有横梁也没有承重墙的开放式非定向空间。SlimBuilding®将建筑外壳的施工时间减少了一半–高效施工是快速住房的基本要求，也是其可租性的基本参数。该项目必须在15年内摊销，建筑成本不能超过1.200欧元/平方米（1.080英镑/平方米）–这比其他使用典型建筑手段的住宅区低20%左右。SIE/Home21优化了SlimBuilding®系统的潜力。平面图采用了严格的、高度经济的网格，非常适合于住房单元和未来的商业用途。阁楼式空间的天花板高度为2.82米，可以以多种方式进行细分。最初的规划反映了快速住房计划的社会关注。这些紧凑而有条理的公寓将出租给低收入的租户，其中许多是最近才来到维也纳的人。西北区的一楼是一个单身母亲中心；东南区的一楼是老年人的辅助生活区。许多租户都是从最近的无家可归中恢复过来的，Home21是他们在多年流浪后的第一套公寓。该建筑没有地窖，也没有建在地面以下。

The SlimBuilding® system (Patent Dr. Winfried Kallinger) was our answer. This innovative, composite system combines slender steel columns with cast-in-place ferro-concrete floor slabs, generating open, non-directional spaces with neither cross-beams nor load-bearing walls. SlimBuilding® reduces construction time for the building shell by half – and efficient construction is a basic requirement for rapid housing, as well as an essential parameter for its rentability. The project must be amortized within fifteen years, and the construction costs could not exceed €1.200,- /m² (£1.080,–/m²) – which is about 20% less than other housing estates that use typical means of construction. SIE/Home21 optimizes the potential of the SlimBuilding® system. The floor plans use a strict, highly economical grid that is ideally suited for both housing units and for future commercial use. The loft-like spaces have ceiling heights of 2,82m and can be subdivided in many ways. The initial programming reflects the social concerns of the Rapid Housing Program. The compact yet well-organized apartments are to be rented to low-income tenants, many of which are recent arrivals in Vienna. In the first floor of the north-west tract is a centre for single-mothers; the ground-floor of the south-east tract houses assisted-living for the elderly. Many of the tenants are recovering from recent bouts of homelessness, and Home21 represents their first apartment after years of living rough. The complex has no cellar and is not built-out below grade.

地面停车位与底层紧凑、可灵活分割的商业单元相得益彰。建筑语言和项目的物质性反映了方案、建筑系统和经济的原则。它使建筑的结构与阳台、外墙和底层的使用协调一致。阳台系统的框架是由简单的镀锌钢段建成的。它的垂直方向与SlimBuilding®系统的轴线一致，而预制混凝土阳台则铺设在它的水平支柱上。栏杆是由梯形轮廓的卷材铝板制成的。阳台可以在两个位置上设置。这对系统网格的严格秩序产生了一种有节奏的对立。红色渲染的外墙和金色调的阳台之间的色彩游戏使建筑构图更加温暖和有趣。

At-grade parking complements the compact, flexibly sub-dividable commercial units on the ground floor. The architectural language and the project’s materiality reflect the principles of program, building system and economy. It harmonizes the building’s structure with the balconies, the facade and the ground floor usage. The frame of the balcony system is built out of simple, galvanized steel sections. Its verticals align with the axes of the SlimBuilding® system, and the pre-cast concrete balconies are laid upon its horizontal consoles. The balustrades are built out of coil-coated sheet aluminium in trapezoidal profile. The balconies can be set upon the consoles in two positions. This generates a rhythmic counterpoint to the strict order of the system’s grid. The play of colour between the red-rendered facade and the gold-tones of the balconies lends the architectural composition warmth and interest.

Architects: trans_city / Christian Aulinger, Mark Gilbert
Area : 18173 m²
Year : 2018
Photographs :Daniel Hawelka
Manufacturers : GRAPHISOFT, Pilkington, Mix-Fix
Consultants : Hiessberger GmbH, Kratochvil GmbH
Engineering : Katzkow Partner
Design Team : Mark Gilbert, Christian Aulinger; Markus Steiner, Simon Hendrix, Lu-ying Yan-Newman, Dmytro Isaiev
Clients : KallingerProjekte
Landscape : Susanne Kallinger
Collaborators : Assunta Abdel Aziz Mohamed, Olga Georgieva
City : Wien
Country : Austria