本次改造项目的业主是一家有着独立办公楼的科技公司。办公楼屋面景观潜力很好，除了东西南北，沿四角方向都可看到远处的景观。利用这一优势，屋顶需要提供一个可以供员工活动休息的家。

Client company is a tech company that occupies an entire office building. The office building rooftop has great corner views, either to the city or to the mountains in the background. A rooftop house is built to take advantage of this as well as providing a home like space for staff members.

▼员工之家西北立面外观，northwest exterior view of the KMD house ©鲍威建筑工作室

场地位于办公楼的楼顶，场地尺寸为33mx25m，屋面现有构筑物为中间的一对剪刀楼梯间以及电梯机房。除了周围由1.2米高女儿墙环绕，屋面集中部有通风管道的屋面排风口。

The site is on the rooftop of a five-story office building with a dimension of 33mx25m in plan. Surrounded by a 1.2 meter high parapet at the periphery, the only built structures on top is a T shaped shed that houses staircase and elevator equipment, and a series of air vents that puncture through the floor slab.

在不改变主楼体街道感知体量的基础上，加建平面试图将可应用范围体量最大化。边界距离女儿墙进行适当的退让，另外考虑场地现有屋顶通风管道的制约。建筑将整体体量抬升1米，以使人们在室内视线看出去的时候超越现有女儿墙，提供毫无遮拦的观景机会。

▼概念生成，house concept ©鲍威建筑工作室

To maximize the building volume and to be unnoticeable from the street level, the building mass is offset from the parapet boundary. The outer limit of the building is shaped by this restriction and locations of existing air vents. In order to have an unobstructed view over the parapet, the entire building mass is elevated for one meter, gaining a vantage point out to the open for all activities happening inside.

▼西南立面外观，考虑场地现有屋顶通风管道的制约，southwest facade exterior view, the outer limit of the building is shaped by this restriction and locations of existing air vents ©鲍威建筑工作室

▼东南立面外观，southeast facade exterior view ©鲍威建筑工作室

▼北立面外观局部，partial north facade exterior view ©鲍威建筑工作室

基于现有楼梯间与电梯间的T形体量，新建建筑平面以U形平面嵌入。西边员工区相对开放，由厨房、餐厅、吧台、休息区等功能组成；东边起居区相对私密，由茶室和起居空间组成；中间连接区域布置机房、卫生间等辅助功能。

▼轴测图，the axon ©鲍威建筑工作室

The new building plan matches the T shaped shed with a U configuration. The western portion houses programs such as kitchen, dining, bar and lounge. The eastern portion has a tea house and a living room, relatively private in terms of usage. The middle portion is comprised of service programs such as a mechanical room and a bathroom.

▼东边相对私密的起居区，the relatively private living space in the eastern portion ©鲍威建筑工作室

▼西边的厨房，the kitchen in the western portion ©鲍威建筑工作室

▼西边的吧台，the bar in the western portion ©鲍威建筑工作室

▼西边的休息区，the lounge in the western portion ©鲍威建筑工作室

四个不同的角窗分别布置在建筑四角，提供了外向的景观机会。三个不同的院子也带入了向内的景观。西边树院，中部天院，以及东边水院，将光影与自然带到空间组织中来。

▼角窗布置在建筑四角，提供了外向的景观机会，the corner window, providing different viewing experiences to the outside sceneries ©鲍威建筑工作室

▼角窗，享有城市景观，the corner window with city view ©鲍威建筑工作室

▼角窗，享有山景，the corner window with mountain view ©鲍威建筑工作室

Four distinctive windows are placed at four corners to provide different viewing experiences to the outside sceneries. Three courtyards are introduced as to create inner views as well: a tree yard to the west, a water yard to the East, and a sun yard in the middle. These courtyards bring natural elements such as light and shadow further into the house.

▼东边的水院，将光影与自然带到空间组织中来，the water yard to the east, bringing natural elements such as light and shadow further into the house ©鲍威建筑工作室

▼中部的天院，the sun yard in the middle ©鲍威建筑工作室

▼西边的树院，the tree yard to the west ©鲍威建筑工作室

为了在屋顶上实现提升1米的做法，建筑需要建立一个新的平台。此平台结构对位生根于五层的柱梁结构之上，建筑体的结构在此平台上再按自身逻辑生根。新的地平与楼面板之间形成了空腔夹层，不但很好实现了热工性能，而且为院子的覆土、鱼缸水池以及空调管道提供了空间。

In order to elevate the building for one meter, a new datum is established on the existing roof structure. This new floor structure is anchored to the main beams and columns at the floor below, allowing the house structures to grow freely on this new platform. The cavity space in-between the new floor plate and existing roof not only helps with the thermal performance of the new house, but also provide depth for earth and water features of the courtyards and space for air vents that feed into the rooms.

▼建筑施工，the house construction ©鲍威建筑工作室

建筑主体为钢结构，轻质混凝土砌块为墙体填充，外加泡沫保温板材，外立面为抹灰加涂料。室内地板为复合实木地板，墙面为抹灰加白色涂料，天花为石膏板加抹灰白色涂料。建筑材料预算成本很低，主要将视觉焦点集中在最精彩的向外与向内的自然景观。

The main building structure is steel, with CMU blocks as wall infill. Insulation foam panels are applied to the exterior with plaster and paint as final finish. Interior is furnished with wood floor and plastered ceiling and walls. Due to a tight budget, the visual interests are focused on views into the courtyards and out to the landscape, rather than on exquisite materials.

▼总平面图，site plan ©鲍威建筑工作室

▼平面图，floor plan ©鲍威建筑工作室

▼剖面图，section ©鲍威建筑工作室

项目建筑面积：180平米 项目地址：北京市 设计时间：2018/04 – 2018/08 施工时间：2018/08 – 2019/08 建筑设计：ＢＷＡＯ／鲍威建筑工作室 建筑团队：鲍威、贾琰、陈明雷、李珊、黄探宇 结构设计：桑阳勇 水暖电设计：杭云峰、汤承武、韦德廖 灯光咨询：周轩宇 总体施工： 北京建鸿亿鸿森装饰工程有限公司 主要材料： DBS断桥铝门窗、Dupont 外墙涂料

Building Area: 180 sm Building Location: Beijing Design Period: 04/2018 – 08/2018 Construction Period: 08/2018 – 08/2019 Architects: BWAO Team: Bao Wei, Jia Yan, Chen Minglei, Li Shan, Huang Tanyu Structural Engineer: Sang Yangyong MEP Engineer: Hang Yunfeng, Tang Chengwu, Wei Deliao Lighting Consultant: Zhou Xuanyu Contractor: Beijing JHYHS Construction Main Products: DBS aluminum alloy windows and doors system, Dupont exterior wall paint