城市环境大楼是由Lahdelma & Mahlamäki事务所为赫尔辛基的城市环境部门设计的建筑。项目在尊重建筑历史的基础上融合了先进的建造技术，从而同时呈现出既现代又古老的气质。建筑的特点还体现在其粗犷的选材（包括砖、混凝土、木材和铜）以及带有独特亭子结构的屋顶露台。
The Urban Environment House is a building designed by Lahdelma & Mahlamäki architects for the Urban Environment Division of the City of Helsinki. It combines new building technology with references to the history of architecture – as a building, it is modern and archaic at the same time. The Urban Environment House is also characterized by the rough materiality of brick, concrete, wood and copper, and the rooftop terraces with their distinct pavilions.
The spacious interiors include activity-based work environments and public spaces that invite citizens to utilize city services. Nearly a zero-energy building, the environmental friendliness of the Urban Environment House is reflected in long-lasting solutions that allow flexible use of the building. It is also the winner of the Tekla BIM Award 2020 for Finland and the Baltics.
▼建筑外观，exterior view © Marc Goodwin
Urban Environment House in cityscape
The Urban Environment House is a large building that was adapted to its surroundings by dividing its mass into parts. In terms of functionality and HVAC, the building complex can be divided into three independent parts.
▼鸟瞰，aerial view © Kuvatoimisto Kuvio
▼城市景观中的大楼，project in cityscape © Kuvatoimisto Kuvio
In the facades, the parts of the building are separated by rooftop terraces and pavilions placed on them, which give each terrace its own character. Varied mortar joint styles and the use of wood, concrete and copper in details also subtly differentiate the parts of the building from each other.
▼从外部望向露台之一，view to one of the rooftop terraces © Marc Goodwin
▼立面局部，facade partial view © Kuvatoimisto Kuvio
The main facades of the building open to the middle of the block towards a new public square and a pedestrian street. Up to two-story-high brick arches and an arcade, which continues all the way to the main lobby, connect the street space and the interior of the Urban Environment House and, on the other hand, communicate about the public nature of the ground floor. Overall, the building is designed to invite citizens to utilize city services and participate in civic activities.
▼两层楼高的砖拱和一条通向大厅的拱廊将大楼和街道空间连接起来 © Marc Goodwin
Up to two-story-high brick arches and an arcade connect the street space and the interior of the Urban Environment House
▼立面细部，facade detailed view © Marc Goodwin
The most significant users of the Urban Environment House are built environment officials. This was made visible in the building by, for example, pursuing rough materiality and leaving HVAC largely exposed. The building utilizes an advanced combination of brick cladding and cast-in-place concrete structure, which made it possible to realize the broad brick arches and the half-arch at a corner of the building. As historicist elements, the arches and arcades link the Urban Environment House to the history of architecture, thus creating a building that is both modern and archaic.
▼拱窗细节，arched window detailed view © Marc Goodwin
The Urban Environment House is an activity-based work environment characterized by spaciousness and high ceilings. The interiors are a diverse mixture of ample spaces, where, for example, openings connecting the floors, auditorium-style staircases, and street-like passageways have replaced conventional isolated floors and lobbies that pierce the whole building.
▼大厅空间，lobby © Kuvatoimisto Kuvio
▼剧场式的台阶，auditorium-style staircases © Marc Goodwin ©Kuvatoimisto Kuvio
Efficient workspaces are the result of combining a deep building frame with higher-than-usual floor height and large windows, which allows daylight far into the building. Open spaces, quiet work areas and rooms suitable for either meetings or concentration cater to present-day office work. As a counterbalance to work, the Urban Environment House also has various facilities for exercising, as well as cafeterias and break rooms.
▼办公空间，workspaces © Kuvatoimisto Kuvio
▼办公区域中庭，working area atrium © Kuvatoimisto Kuvio
▼开放区域、安静的工作区和适合开会或专注办公的房间能够充分适应现代办公的需要 © Kuvatoimisto Kuvio
Open spaces, quiet work areas and rooms suitable for either meetings or concentration cater to present-day office work
In the spirit of open Nordic society and civic democracy, the first two floors of the building consist mostly of public spaces. In the spacious entrance lobby citizens can find an exhibition space and customer service points, which were previously located in several places across the city. An auditorium, a café, and a restaurant on the first floor are also open to city dwellers. On the second floor there is a conference room for city boards and meeting rooms that can be used for customer service as well as for meetings between city officials and cooperation partners.
▼大厅休息区，lobby seating area © Marc Goodwin
▼食堂，cafeteria © Kuvatoimisto Kuvio
The rooftop terraces with distinct pavilions on them, which can be used for both relaxation and work, are a unique addition to the spaces and character of the Urban Environment House. Each terrace is different, which is reflected in the vegetation and the shapes and materials of the pavilions. Inspired by gazebos, the pavilions were designed with an aim of applying the historical building type into an urban work environment.
▼屋顶露台，rooftop terrace © Kuvatoimisto Kuvio
▼亭子细部，pavilion detailed view © Marc Goodwin
▼建筑夜景，night view © Kuvatoimisto Kuvio
▼场地平面图，site plan © Lahdelma & Mahlamäki Architects
▼首层平面图，ground floor plan © Lahdelma & Mahlamäki Architects
▼剖面图，section © Lahdelma & Mahlamäki Architects
Urban Environment House
Location: Helsinki, Finland
Total area: 40,900 m²
Client: City of Helsinki
Program: Work environments, public service facilities, auditorium, restaurant
Principal Designer: Ilmari Lahdelma
Project Architect: Teemu Seppälä
Responsible Interior Architect: Minja Hildén
Other team members: Maritta Kukkonen, Minna Lahdelma, Mikko Lahti, Tomoyo Nakamura, Wing-Hang Chan, Seija Serovuo, Olli Aarnio, Mia Salonen, Joona Hulmi, Panu Härmävaara
Assistants: Jonne Ahvonen, Esa Hotanen, Timo Jyrinki, Marek Grodzicki, Anne Harju, Jan Krupa, Shaun Leung, Ewa Mierzwa, Piotr Panczyk, Maija Poukka, Leila Räsänen, Marko Santala, Paulina Sawczuk, Julius Seniunas, Heidi Siitonen, Jalo Sippola, Kristiina Suoniemi, Tarja Suvisto, Olli Tallbacka
Main contractor: Skanska Finland