Hands-on with traditional arch masonry

Thibaut Devulder

A dry stone arch built during the course, under testing!

While working on the restoration of century-old stables in central Oslo, I was invited to take part in a practical workshop on traditional arch masonry. The course was organised by the Norwegian Heritage Association (Fortidsminneforeningen) for mastermasons, handworkers and architects who are involved in the restoration of old masonry buildings in Norway.

We explored the complete process of building traditional stone arches, using both dry stone techniques and traditional brick and lime mortar masonry, Over five intensive days, we built from scratch five different types of arches, starting with the design and fabrication of the formworks, the preparation and mixing of traditional lime mortar, the shaping of natural stones and, finally, the erection of the arches themselves.

This was a fantastic opportunity to learn new practical skills to develop our continued interest in historical buildings, as well as to network with talented craftsmen from all over Norway, for future collaborations.

You can admire the completed arches in Oslo’s Medieval park (Middelalderparken), next to the ruins of St Mary’s Church.

Ever dreamt of giving a new life to an old building?

Roof garden under construction

Thibaut Devulder

After getting planning permission more than a year ago , the roof terrace we designed on top of a residential building in central Oslo is finally under construction. The work on site is taking place under a “roof over the roof”, so that the construction of the new staircase and roof garden can take place with minimum disruption to the inhabitants.

Construction in progress: the demolished existing roof, under the temporary scaffolding cover…

Samba in the stair

Thibaut Devulder

Following our complete remodel and extension of their cabins in Hvitsten, overlooking the Oslo Fjord, our clients asked us to also fit an extra living space in one of the little annex buildings on the site.

Sections through the proposed tiny annex cabin, showing the “samba” stair to the sleeping space above

The tiny cabin that we designed accommodates a play space for the children during daytime, a small workstation, sleeping space for two adults and two children, as well as a small terrace for summer breakfast overlooking the fjord. To reach the private sleeping space tucked up over the small living-room, we custom-designed a compact alternating tread stair, called sambatrapp (“samba stair”) in Norwegian, which also doubled as a bookshelves for the desk underneath.

We love working on self-build projects and custom-made furniture, so we were thrilled when our client announced that he wanted to build the stair himself. As with our custom-made screen wall in the main cabin, we developed in collaboration with him alternative designs for the stairs, adjusting the design to joinery techniques he mastered, to produce a full cut-and-assembly manual to build the stairs.

Visit to the seaside cabin in Hvitsten

Thibaut Devulder

A visit to the summer cabin in Hvitsten we remodelled and extended a few years ago. The little annex cabin and terraced landscape that we have just finished designing are now in the process of being built. The landscaping on this steep site overlooking the Oslo Fjord is really bringing together the different indoor and outdoor spaces, happily used by three generations of families and friends!

Portfolio project
Vertical living in a former boiler house

Tom Hughes
A pod-like extension provides services, daylight and ventilation.

A pod-like extension provides services, daylight and ventilation.

This intriguing little project is now under construction in Nottingham. Our client’s town house occupies part of a former builder’s joinery workshop in a Conservation Area. Entry to the main house is through the ground floor of a free-standing former boiler house, complete with an 11m high brick chimney. Our challenge was to re-purpose this special, tiny building to contain a home working office and guest accommodation.

We stripped out and redesigned the boiler house interior to fit a mezzanine level under the opened-up roof structure, and used ‘space saver’ stairs to maximise the floor area. The tiny floor plan is offset by an impressive vertical connection between the levels- with everything needed for occupation accessed off a vertical circulation route culminating in the bed platform.

Careful organisation of the section creates space for a mezzanine level

Careful organisation of the section creates space for a mezzanine level

The temptation is to cut lots of holes in an existing building to let in light, provide ventilation and create new service routes, but in this case we decided to preserve the integrity of the boiler house by adding a highly-serviced pod to the exterior. This provides the necessary service connections, and brings light and ventilation to the interior. The addition is anonymous, in keeping with the industrial heritage of the building whilst creating intrigue and mystery of its own.

Design Team:

Need some creative input to transform an old historical building into a living space?

Portfolio project
A birdwatching 'eyrie' to hover over Wicken Fen

Tom Hughes

We recently achieved Planning Permission for a new birdwatching hide and observation deck for the National Trust at Wicken Fen, Cambridgeshire.

Set at the edge of the fen, the structure was inspired by the singular setting of the SSSI site. The fully accessible birdwatching hide is nestled like a cocoon inside a screen of undulating timber battens. The observation deck above gives view over Sedge Fen, roosting site for Marsh and Hen Harriers. A final eyrie-like observation level gives 360° views ,which take in the whole of Wicken Fen nature reserve and the big skies for which it is famed.

The building nestles into the Carr (tree scrub) at the edge of the Fen.

The highly sensitive eco system of the site is based on 3 meters depth of peat soil, so the structure is designed in collaboration with Canham Consulting Engineers to “touch the earth lightly”, elevated above the Fen on piles so that the habitat can flow underneath. A gently ramped boardwalk, designed for wheelchair accessibility, connects the hide to the existing boardwalk footpath some 30m away.

A fully accessible bird hide at the entry level floats 1.5m above the fen, upper levels can be explored via a triangular staircase to the rear.

Wicken Fen is the National Trust’s oldest nature reserves and one of the most important wetlands in Europe, supporting over 9000 species including a spectacular array of plants, birds and insects. 2hD won the commission via a competitive interview in partnership with Sheltered Spaces, with whom we went on to design the timber cladding and the public consultation process. It is a great privilege to be entrusted with such a sensitive site and to be supported by a client keen to think afresh about how visitors might experience and understand the Fen’s sense of place.

Project team:

Timber screen experiments with Marcus of Sheltered Spaces

A roof top terrace in central Oslo

Thibaut Devulder

Our visualisation of our proposed roof terrace in central Oslo

Having secured planning permission for our roof terrace project in central Oslo, we are now finalising the detailed design, with construction of the staircase extension and roof landscape due to start on site this spring. Above is a quick visualisation we prepared for our clients’ presentation to the residents of the housing cooperative — based on the 3D model that will also be used to communicate all the technical documentations for the construction phase.

Would you like to create new places for your community to meet and thrive?

Our Norwegian branch moves to a new office

Thibaut Devulder

Our Norwegian branch has just moved to a new work space, just next to the Oslo School of Architecture and design (AHO).

The new shared work space of our Oslo office (Photo: © Alliance Architecture Studio)

The new shared work space of our Oslo office (Photo: © Alliance Architecture Studio)

We are delighted to share this new office with three exciting architecture practices:

Here are our new contact details:

2hD Architecture Workshop
Akersbakken 12
0172 Oslo
Norway

 

Portfolio project
A log cabin in Sjusjøen

Thibaut Devulder

The south gables of the completed log cabins, on the snowy fields of Sjusjøen (Photos by Simon Stende)

For this project, we were tasked to design a new winter retreat on the snowy slopes of Sjusjøen, a popular cross-country skiing resort close to Lillehammer, Norway.

Our clients — a family of five — wanted to create a place to gather their extended family and friends for winter vacations and celebrations, accommodating up to three large families simultaneously — up to 16 people.

Unusually, when our clients approached us, they had already selected  a contractor to prefabricate and erect their future cabin, using the traditional log house technique. As they were not satisfied with their existing design solutions, they asked us to develop a custom design, tailored to their specific needs, which would also follow the contractor’s prefabricated construction method.

Our sketch plans of the cabin’s ground and upper floors

At the centre of our design, the large kitchen and the sunken fireplace lounge act as the two main gathering places, where guests can congregate around the main focal points of the cabin: the communal dining table and the large open fireplace. In contrast, each family enjoys its own private accommodation wing, branching off from these main spaces, with the sleeping quarters tucked away from the vibrant social rooms.

Between these two extremes, we intentionally convoluted the internal circulations to create gradients of privacy and strings of informal sitting spaces along them, where guests could interact throughout the day, but also giving opportunities for more quiet, private activities.

Each wing can be used independently, so that the effective size of the cabin can easily be adapted to the number of guests.

The exterior of the newly completed cabin, showing the use of the traditional materials and details of Norwegian log construction (Photo by Simon Stende)

While the interior of the cabin is intricate and spacious, its exterior maintains the compact aesthetics and typology of traditional log architecture — with its multiple interconnected volumes cascading down the sloped site, each visually expressing the different functions of the spaces they enclose.

Three distinct outdoor spaces are tucked around the wings of the building, anchoring further the cabin onto the site: the sheltered main entrance on the north side with access to ski storage, a sunny south courtyard linking the dining space to the open views, and a private terrace to the west, on which an outdoor bath can be enjoyed in the evening sun.

Our design served as the basis for the detailing and production of the hand-sawn logs that were produced and installed on site by the specialist contractor. The result is a very personal cabin, perfectly suited to the needs of its owners and embracing the tradition of Nordic log construction.

Would you like a cabin that really fits your needs and the nature around it?