HUT事务所受托对位于Clerkenwell Green保护区中心的一座旧仓库建筑进行改造。虽然建筑本身需要全面修整，但设计方案仍旧遵循了既有空间的风格与特征。该项目在合理的预算内完成，完美地诠释了如何将位于高密度的伦敦市中心的建筑转变为一座能够满足21世纪工作需求的办公建筑。 项目内容包括对地下室、首层空间、2层和3层办公区以及核心筒的全面整修，以及对4层进行构造上的更替，使其成为既有立面的延伸。
HUT were asked to upgrade a tired looking warehouse building in the heart of the Clerkenwell Green Conservation Area. Although the building needed a wholesale refurbishment, the existing features and character of the spaces became the springboard for the design concept. This project was delivered within budget, demonstrating a perfect example of how central London buildings (within a tight urban grain) can be retrofitted to suit the current office demands and 21st century ways of working. The works included the full refurbishment of the existing basement, ground, 1st and 2nd floor offices and core and a replacement third floor level cleverly detailed to appear as an extension of the existing façade. A new rooftop pavilion provides and impressive duplex with its own private roof terrace, bolstering the building with a landmark architectural feature.
New lighting, entrance and signage immediately improved the building’s street presence. We rebalanced the main façade with the removal of a poor quality roof extension and introduced a high quality double glazed crittall glazing. Preserving the buildings history and the introduction of modern design was a constant consideration which meant keeping a simple palette throughout. A massive upgrade of M&E was undertaken.
▼屋顶扩建部分被换上了高质量的双层Crittall玻璃，the roof extension was removed while a high quality double glazed crittall glazing was introduced
可持续性特征 | Sustainability features
The existing building was poorly insulated and serviced. New double glazed windows were installed throughout.. M&E overview: Retained feature radiators; Natural ventilation; New VRF air conditioning system; Fully accessible raised access floors; New low energy LED lighting
▼办公空间安装了全新的双层玻璃窗，new double glazed windows were installed throughout
The challenge for this building was to provide high quality office space that maximises the energy savings potential whilst minimising the plant requirements and respecting the historic nature and character of the building. After reviewing several servicing strategies, an energy efficient VRF system was deemed the most appropriate as this minimized plant and massing at roof, minimised service risers and service routes allowing the character of the building to be exposed whilst providing excellent energy performance. Allied to this are highly efficient suspended LED Light Fittings to appropriate light levels commensurate with modern office standards. U-values of walls, roof, windows, floor or overall weighted u-value. New Elements: External walls to achieve a U value of 0.28 W/㎡k or better Roof: 0.18; Roof to achieve U value of 0.18 W/㎡k; Glazing to achieve U value of 1.8 W/㎡k.
The project benefited from an upgrade in existing building fabric and highly efficient building fabric to new areas. Where the existing building fabric elements could not be improved or treated, without prejudicing the exposed building character the focus was on ensuring that the new elements would reduce the area weighted U value and therefore fulfill the design scope in providing an energy efficient building.
▼顶层办公空间，office area on the top floor
重建而非拆除 | Rebuild over demolition
Choosing rebuild over demolition has been a significantly positive contribution to conservation area not to mention pleasing to the local residential community to have old buildings restored. The project is an elegant example of warehouse building robustly built which needed refining and bringing up to modern standards. A retrofit helped to define the key design features of the building. A light touch refurbishment was made as the building was already suitably laid out for office use which meant not having to move the core. It possessed abundant floor to ceiling heights and open windows. Rebuild is always undeniably a more environmentally friendly approach to construction.
创新要素 | Element of innovation
Innovation lay in the implementation of Brisiel soliel which reduces heat gain within the building by deflecting sunlight. Abseil points were installed on the exterior of the building so that the windows could be cleaned regularly. On the original visit of the building, the windows were coated in filth and pollution denying visibility and light to enter the rooms.
▼屋顶结构的遮阳系统，Brisiel soliel in the new structure
▼室内柔和的自然光照，a warm, natural lighting of the interior
▼楼梯细部，stair detailed view
An innovative and visually pleasing approach to the way finding design has revealed the buildings past and emphases the brickwork.
▼标识系统突出了砌砖元素，the way finding design emphases the brickwork
客户反馈 | Feedback from the clients
The client is “delighted with how the project has turned out. He add, “ The architect’s design and quality workmanship throughout have added a lot of character to an already stunning building. This is evidenced by how well it has performed since completing in November. We are particularly fond of the “Clerkenwell green” palette which defines the scheme, as seen on the external brick, core areas and WC facilities.’ All office floors were let within two weeks of completion with record rents. Showers & bike storage facilities and new a communal work area in reception benefits the users in addition to extra outdoor space on the roof and a new DDA compliant lift.
▼洗手间的“Clerkenwell绿”配色方案，the “Clerkenwell green” palette on WC facilities
The team consisted of a Trusted group of consultants for a repeat client of over 15 years thus a strong relationship between the Client, Contractor and Design Team was critical to the success.
▼首层平面图，ground floor plan
▼办公标准层平面图，typical office plan
▼顶层平面图，fourth floor plan
Project size: 1220 m2
Completion date: 2018
Building levels: 4
Project team: HUT