© James Whitaker

c.詹姆斯·惠特克

架构师提供的文本描述。一个年轻的家庭决定在伦敦郊外的一个农村地区定居，并在一个旧牛棚的墙壁上开始他们的建筑工程。他们对环境建筑采取整体办法感兴趣，他们的简要说明是，该房屋应与其环境和谐配合，在可能的情况下使用当地收获的和重复使用的材料，并成为环境性能方面的典范。

Text description provided by the architects. A young family decided to settle in a rural area outside of London, and to start their building project around the walls of an old cow shed. Interested in a holistic approach to environmental architecture, their brief was that the house should fit harmoniously in its context, use locally harvested and reused materials where possible and be an exemplar in terms of environmental performance.

 Exploded Axonometric

爆炸轴测

选址策略：最初的农场组织结构为南方提供了良好的景观，而北方则提供了一个隐蔽的庭院。新房子在这一安排范围内工作，向南开窗，被动进入主居住/就餐区，并通过北方进入，远离盛行的风。新房子的脚印占到原来谷仓足迹的三分之二，剩下的三分之一是北方的一个遮蔽庭院。原来的牛棚周围两米高的墙壁被留在原地，作为新房子的挡风屏障，部分地包围了被遮蔽的庭院。在西方，提供了一个‘班卓琴露台’，偶然的机会，老板决定拿起班卓琴，并获得摇椅在他的晚年。

Site strategy : The original organisation of the farm provided good views to the south and a sheltered courtyard to the north. The new house works within this arrangement, glazed to the south for passive gains to the main living / dining area, and accessed via the north, away from prevailing winds. The footprint of the new house occupies two thirds of the original barn footprint, the remaining third left as a sheltered courtyard to the north. The perimeter 2m high walls of the original cow-barn were left in situ, which function as a rain-screen to the new house, and partly enclose the sheltered courtyard. To the west, a ‘banjo terrace’ is provided, on the off-chance that the owner decides to take up the banjo and acquire a rocking chair in his later years.

 © James Whitaker

c.詹姆斯·惠特克

材料：橡木框架建筑的想法被认为是一个关键的设计愿望，但在保持气密性方面出现了潜在的问题，随着时间的推移，框架不可避免地收缩。解决方案是一种混合结构，一个完全内化的橡木框架提供强度，和一个高度绝缘的气密外壳外部提供刚度。新橡木框架和重复使用的钢框架相互抵消，为地面自然通风提供了小开口。

Materials : The idea of an oak frame building was identified as a key design aspiration, but presented potential issues in terms of maintaining air tightness with inevitable shrinkage of the frame over time. The solution was a hybrid structure, with a fully internalised oak frame providing strength, and a highly insulated air tight envelope externally providing stiffness. The new oak frame and the reused steel frame are offset relative to each other providing small openings for natural ventilation at ground level.

这栋建筑覆盖着来自当地的英国落叶松，这些落叶松延伸到了某些需要隐私保护的窗户上。综合排水沟限制屋檐的悬垂，并确保落叶松在其使用期间最少变色。许多原始牛棚的材料被重复使用，包括90%的钢框架。现有的板被留在原地，这不仅降低了浇筑一个新的板和地基的成本，而且减少了必须从现场移走的废品数量。作为景观设计策略的一部分，挖掘出来的东西被重新分配到了遗址周围。这意味着现场没有净移除材料。

The building is clad with locally sourced British larch, which extends over certain windows where privacy is required. Integrated guttering limit the overhang of the eaves, and ensure minimum discolouration of the larch over its life. Many of the materials of the original cow barn were reused, including 90% of the steel frame. The existing slab was left in-situ, which not only reduced the cost of pouring a new slab and foundations, it also minimised the amount of spoil that had to be removed from the site. What was excavated was redistributed around the site as a part of the landscaping strategy. This meant there was no net removal of material from the site.

 © James Whitaker

c.詹姆斯·惠特克

能源：为了减少能源消耗，特别是空间采暖，建筑面料的U值达到0.13W/m2，所有的窗户都是三层玻璃。在整个施工过程中严格控制透气性，并为所有空间提供机械通风热回收。采暖由屋前场下的地面收集器提供，并结合地面源热泵通过地板加热提供热量。根据这一设计，该房屋的年能耗估计为9.1公斤/平方米，相当于能源等级89(100是最好的)。

Energy: In order to minimise energy consumption, particularly for space heating, the building fabric achieves U-values of 0.13W/m2, and all windows are triple glazed. Air permeability was tightly controlled throughout the construction process, and mechanical ventilation heat recovery provided to all spaces. Heating is provided from ground collectors below the field in front of the house, in combination with a ground source heat pump delivering heat via underfloor heating. Based on this design the house is estimated to have an estimated annual energy consumption of 9.1 kgC02/m2/annum, equivalent to an Energy Rating of 89 (100 being the best).

Architects A-ZERO architects

Location Leighton Buzzard, United Kingdom

Category Renovation

Project Year 2014

Photographs James Whitaker