“Sculpture’s gift to architecture is the staircase” – Alex de Rijke

Dezeen and MINI World Tour: architect Alex de Rijke of dRMM talks to Dezeen about his practice’s Escher-inspired installation of staircases in this movie filmed outside Tate Modern in London. 

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke
Alex de Rijke of dRMM

The Endless Stair installation, constructed on the bank of the River Thames as part of this years London Design Festival, comprises 15 interlocking staircases demonstrating a new cross-laminated timber material.

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

“Endless Stair is a prototype,” explains de Rijke, who is co-founder of architects de Rijke Marsh Morgan and dean of architecture at the Royal College of Art. “It’s a research project into making a new material, or a new version of a material, namely a hard wood version of laminated timber, which is generally soft wood.”

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

dRMM chose to create an installation of stairs to demonstrate the material because of the sculptural quality of staircases, de Rijke says.

“Stairs are one of the nicest things about architecture,” he explains. “Somebody once said sculpture’s gift to architecture is the staircase.”

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

He continues: “My team were interested in Escher’s endless stair as a conceptual conceit. We thought we would make a very simple version of Escher’s sophisticated ideas.”

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

To recreate one of Escher’s drawings in 3D would be impossible, and de Rijke admits that the installation is not literally endless.

“Endless Stair is obviously a real staircase with a real end,” he says. “The idea of Endless Stair is that it can be endlessly reconfigured; it’s something that can be recycled and reused. There are 15 flights in this example, and they can be reconfigured with more or less in many different contexts.”

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

De Rijke says that the sculpture is meant to be fun, but forms part of a serious research project.

“All useful architecture has its origins in some kind of experiment,” he says. “We wanted to make a new material and we wanted to apply it and we did so with a kind of sculpture, but actually there’s a serious intent behind it, which is the application at the scale of buildings and larger structures.”

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

We drove to Tate Modern in our MINI Cooper S Paceman. The music featured in the movie is a track called Temple by London band Dead Red Sun.

See all our Dezeen and MINI World Tour movies »
See all our stories about London Design Festival 2013 »
See Dezeen’s map and guide to London Design Festival 2013 »

"Sculpture's gift to architecture<br /> is the staircase" - Alex de Rijke

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Endless Stair by dRMM

Architecture firm dRMM has combined fifteen staircases to create an Escher-style installation outside Tate Modern, ahead of the London Design Festival beginning tomorrow (+ slideshow).

Endless Stair by dRMM

“Stairs are always the most interesting things about architecture, they’re places where people meet,” dRMM co-founder Alex de Rijke told Dezeen at this morning’s opening presentation.

Endless Stair by dRMM

The interlocking wooden staircases are configured to create a maze of walkways and a viewpoints towards the city’s skyline across the Thames.

Endless Stair by dRMM

“It’s up to you what you want to look at, it gets you up high so you can see out over the river to St Paul’s,” de Rijke told us.

Endless Stair by dRMM

Visitors can climb up, down, over and under the structure, with some stairs leading from one to another and others to dead ends.

Endless Stair by dRMM

Steps and balustrades are made from cross-laminated timber panels of tulipwood taken from offcuts usually used for skirting boards.

Endless Stair by dRMM

The vertical panels used to form hand rails overlap to look like treads turned on their side, adding to the optical illusion.

Endless Stair by dRMM

Initially proposed to sit next to St Paul’s Cathedral, the installation was relocated to the lawn in front of Tate Modern – an art gallery housed in a former power station on the south bank of the river.

Endless Stair by dRMM

“St Paul’s was an interesting site but it was very constricted, the project was difficult to realise there whereas this space is much more open,” de Rijke. “This seemed like the best possible place to put it.”

Endless Stair by dRMM

The Endless Stair was created in collaboration with the American Hardwood Export Council and engineering firm Arup.

Endless Stair by dRMM

Taking place from 14 to 22 September, the London Design Festival will also feature a giant chandelier installed at the V&A museum. See our map of all the best exhibitions, talks and parties here.

Endless Stair by dRMM

Photos are copyright Dezeen.

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Loft Space in Camden by Craft Design

The latest residence to feature a combined staircase and bookshelf is this loft conversion in north London by British design studio Craft Design. (+ slideshow)

Loft conversion in camden by Craft design

Craft Design renovated a former office to create the open-plan residence, inserting a central bathroom that separates the kitchen and dining area from the living room, while also providing the framework for a first-floor bed deck.

Loft conversion in camden by Craft design

The gabled end wall is covered with bookshelves, providing storage for three different areas. The staircase is formed from a series of extruded shelves and leads up from the living room to the mezzanine sleeping area.

Loft conversion in camden by Craft design

“The idea was to maximise the sense of space as well as keeping a simple and efficient layout,” said designers Hugo D’Enjoy and Armando Elias.

Loft conversion in camden by Craft design

The designers kept to a simple palette of wooden flooring with white walls and fittings, allowing the owner to add colour by displaying books and other collected items.

Loft conversion in camden by Craft design

We’ve recently featured a renovated apartment in Barcelona that also uses a bookcase as a staircase. See more interiors that combine staircases with bookshelves »

Loft conversion in camden by Craft design

Photography is by Craft Design.

Loft conversion in camden by Craft design

Here’s a project description by Armado Elias:


London based Studio Craft Design led by Hugo D’Enjoy and Armando Elias has transformed a loft space in Camden into a bright and dynamic living-working space.

Loft conversion in camden by Craft design

Originally used as an open plan office space, the challenge was to convert the property into a bespoke and innovative environment that efficiently and creatively responds to the demands of living in London.

Loft conversion in camden by Craft design
3D diagram

In response to the brief, the idea was to maximise the sense of space as well as keeping a simple and efficient layout. The solution successfully achieved this with the introduction of a single volume located central to the loft where all the services are accommodated. Detached from the facades and ceilings this element has divided the open plan into several spaces for different uses such as kitchen-dinning, living room, storage, bathroom and a mezzanine for the sleeping and working area.

Loft conversion in camden by Craft design
Ground floor plan – click for larger image

The 4.5 m height party wall and roof eaves have been fully used with shelves and storage, which serve the whole space. The stair to access the mezzanine level was cleverly integrated into this single piece of furniture. The rest was about keeping a simple palette in terms of materials and colors to allow the owner collection of objects, art and books give the wall an authentic personality to the space.

Loft conversion in camden by Craft design
Mezzanine plan – click for larger image

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Coast Path Staircase at Royal William Yard by Gillespie Yunnie Architects

Coastal walkers in south-west England can now detour through a historic naval supply yard thanks to this dramatic staircase that cuts through formerly impregnable walls (+ slideshow).

Coast Path Staircase by Gillespie Yunnie Architects

Designed by Gillespie Yunnie Architects, the cantilevered stairs link Royal William Yard in Plymouth to the public park above, allowing ramblers on the South West Coast path to enter walk through the 19th Century yard for the first time.

Coast Path Staircase by Gillespie Yunnie Architects

The stairs are part of the regeneration of the yard by developer Urban Splash, which is converting the complex of Grade I-listed warehouses that once held supplies of beer, rum and ship’s biscuits into apartments, offices, shops and restaurants.

Coast Path Staircase by Gillespie Yunnie Architects

At night the stairs are illuminated by colour-shifting ribbons of LED lights.

Coast Path Staircase by Gillespie Yunnie Architects

Photography is by Richard Downer.

Here’s some info from Gillespie Yunnie Architects:


The stair links the defensive western end of the Royal William Yard to the South West Coast path above the site. The Royal William Yard was designed by Sir John Renny to supply the entire Royal navy Fleet with beer, rum, ships biscuits and cured meat. Built between 1826 and 1831 it was used continually by the Navy until the 1990s when it closed and has since been subject to one of the largest regeneration programmes in the South West. Gillespie Yunnie Architects have been working with developers Urban Splash since 2005 on the Grade I Listed site, which now houses a mixture of apartments, offices, shops and restaurants.

Coast Path Staircase by Gillespie Yunnie Architects

The Royal William Yard has always been a dead end due to its naturally defensive nature and peninsular location, so the staircase linking the far end of the Yard with the open green space of the peninsula above has always been a key part of the regeneration masterplan, to allow residents to access the park and historic battlements at the top of the high retaining wall, and allow walker to continue along the Coast Path route via a dramatic piece of architecture.

As a practice we are all very aware of how stunning our local coastline is, we all sail, surf and regularly walk the coast path. To be involved in linking two amazing and contrasting waterfront locations with a piece of bold contemporary design was always going to be right up our street. We designed the stair to emulate some of the excitement and surprise of journeying along the South West Coast path.

Coast Path Staircase by Gillespie Yunnie Architects

The journey is very different depending on which way you approach the stair; From the Yard, the stair is a dark solid mass, snug against the historic retaining wall, and the journey, hidden by the high solid sides, is only apparent as you begin to climb the stair, with the concealed glass viewing platform and panoramic views over the Tamar Estuary across to Cornwall being concealed until the last minute; from the park above, you first have to find the entrance, housed within a sunken ruin of an old military store. A steel ‘portal’ is cut through the huge wall marking the start of the journey, and your first view opens up before you, as you descend down the cantilevered upper flight. At night it changes again, using concealed LED ribbon lights beneath the handrail to wash the entire inner surfaces with an ever changing river of colour, a bit of fun, and brightness in the otherwise dark, hard context of the old military site, and reminiscent of seaside promenades across the country.

Architects: Will Hoare / Jackie Gillespie (Gillespie Yunnie Architects)
Developer/Contractor: Urban Splash
Steel Fabricator: Underhill Engineering
Engineer: Hydrock Structures 1


Metalstaircaseby Francesco Librizzi Studio

See more staircases, including this one made of extremely narrow steel rods

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UN City by 3XN

Danish architects 3XN have completed a star-shaped regional headquarters for the United Nations in Copenhagen – but the real star is the spectacular staircase rising through the centre of the atrium (+ slideshow).

UN City by 3XN

The UN City complex, located at the tip of the Marmormolen wharf in the city’s docks, takes the form of an eight-pointed star in plan and houses 1,700 UN staff.

UN City by 3XN

3XN specially developed the white perforated aluminum shutters that clad the building and which can be controlled by workers via their computers.

UN City by 3XN

Environmental features include sea-water cooling, rainwater collectors to flush the toilets, aerator taps to reduce water use and rooftop solar panels that can generate 297,000 kWh/year.

UN City by 3XN

The sculptural central staircase is intended to encourage staff to circulate and interact, representing the UN’s role in encouraging positive dialogue between nations.

UN City by 3XN

Likewise the star-form of the building is a metaphor for the UN’s work at all the compass points of the world.

UN City by 3XN

See more projects by 3XN, including the dune-shaped Blue Planet Aquarium in Copenhagen, which was today shortlisted for the World Building of the Year award.

UN City by 3XN

Here’s some info from 3XN:


3XN’s eight pointed star shaped UN City is inaugurated in Copenhagen

The new regional head office of the United Nations is designed with clear references to the UN’s identity and values: It is a building that physically reaches out to all parts the world, while the sculptural staircase in its core reflects the UN’s work to create global dialogue.

UN City by 3XN

Delivering as One

Bringing together the various agencies and functions of the United Nations regional offices in Copenhagen, the new UN City is located at Marmormolen (The Marble Pier) north of Copenhagen’s city center. 3XN’s design is a response to the UN’s wishes for an iconic building expressing the organization’s values and authority. More specifically, the design reflects the independent, efficient and professional nature of each UN unit, while at the same time clearly rooted in a mutual set of values – Delivering as One.

UN City by 3XN

Located on an artificial island the building is naturally separated from its immediate surroundings, while still being highly visible from both the city and the water.

The Star

From above, the eight-pointed star shape is a clear visual reference point, which, like the UN, reaches out to all corners of the world. Similar to the surrounding rusty pier edges, the UN city has a dark burnished steel base from which the white main building rises. This is a reference to the elegant white ships that characterize this part of the Copenhagen harbor.

The building has a façade cladding of white perforated aluminum shutters, developed by 3XN and contractor Pihl specifically for the UN City. The shutters ensure solar shading without blocking the view or the daylight. Since the facade is divided into three meter long modules, it is possible for the employees to control the sunshade from their computers. The result is an improved indoor environment, and a dynamic façade expressing a building full of life.

From the core of the star-shaped building, a daylight filled atrium connects the lobby level containing all common functions, with the office levels, where the various UN agencies are distributed.

From the atrium a central staircase binds all levels together. 3XN has created the staircase as a dramatic spatial sculpture, which is to be seen as a symbol of the UN’s work to create dialogue, interaction and positive encounters between people in all parts of the world. In the daily life, the sculptural form inspires the UN employees to want to use the stairs, and thus the staircase also forms the basis for dialogue, cooperation and informal meetings between the various UN organizations.

Sustainability

All office levels are characterized by an open and flexible layout encouraging knowledge sharing and interaction as well as individual immersion. Work stations are ensured plenty of high quality daylight and a good indoor climate. The working environment is further improved by an overall health policy including green recreational areas and a number of sustainable features including:

Air quality – The building has been designed to limit the use of chemicals and pollutants during both its construction and its use. The building is entirely ventilated with filtered outside air. This ensures that only clean, fresh air is present in the building and helps balance the interior humidity level.

Solar panels – More than 1,400 solar panels are lining the roof of the building to support the goal of generating renewable energy onsite. With an estimated total production of 297,000 kWh/year, the solar panels significantly reduce the need for electricity from the grid.

Sea water cooling – Cold seawater pumped into the building’s cooling system, almost entirely eliminating the need for electricity to power the cooling cycle.

Water efficiency – Innovative aerators have been placed in the taps in kitchens, toilets and showers throughout the building. The low-flow taps reduce water usage. In addition, pipes on the roof capture almost 3,000,000 litres of rainwater annually, which is almost enough to flush the toilets of the entire building without using potable water.

Solar shades – Sophisticated solar shades on the building’s facade can be opened and closed to either trap or reflect the sun’s heat.

Reflective roofs – The roof of the building has been coated with a white, recyclable membrane, made from plant-based materials. The environmentally-friendly coating reflects sunlight and reduces the solar warming of the building.

The UN City is expected to become one of Denmark’s most energy efficient buildings with an annual energy consumption of less than 50 KwH per m2 (Danish Energy Class 1). The UN City is registered with the LEED sustainability ratings system with the certification goal of LEED® Platinum. UN City has been awarded the prestigious GreenBuilding Award 2012 by the European Commission.

Project Data

The project is delivered in two phases: Phase 1 was completed in December 2012 and phase 2 will be completed in December 2013. The official inauguration took place July 4 2013 with the participation of the General Secretary of the UN, Mr. Ban Ki-Moon.

Client: FN Byen p.s. (Copenhagen Port & City Development)

Architect: 3XN

Engineer: Orbicon a/s

Landscape: Schønherr

Contractor: Pihl A/S

Interior Design: PLH / UN Common Services

Size: 45,000 m2 office and public facilities + 7,000 m2 archives and secondary facilities

Capacity: 1700 employees

Budget: Approx. 134 mio. EURO

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dRMM to install Escher-style staircase outside St Paul’s Cathedral

News: architecture firm dRMM will install 20 interlocking wooden staircases outside St Paul’s Cathedral for the London Design Festival in September.

Unveiled this morning at the London Design Festival 2013 press preview, the design comprises a complex configuration of steps to be made from 44 cubic metres of tulipwood. Visitors will be invited to climb the structure and use it as a viewpoint towards the River Thames, Millennium Bridge and Tate Modern.

“Endless Stair is a three-dimensional exercise in composition, structure and scale,” said dRMM co-founder Alex de Rijke. “The Escher-like game of perception and circulation in timber playfully contrasts with the religious and corporate environment of stone and glass in the city.”

The structure will be made of cross-laminated timber (CLT) panels, which are usually created by layering up softwoods to form cheap and stable panels for fast construction. This installation will instead use a sustainable hardwood – tulipwood – to form lighter and stronger hardwood CLT panels for the first time.

The Endless Stair will be created in association with the American Hardwood Export Council and engineered by Arup. A lighting scheme for the spot will be developed by London studio Seam Design using products from LED company Lumenpulse.

The same team delivered Amanda Levete’s Timber Wave installation outside the V&A museum for the 2011 London Design Festival. The American Hardwood Export Council worked with Royal College of Art students on twelve wooden chairs at last year’s festival.

Alex de Rijke is dean of the School of Architecture at the Royal College of Art in London. Previous architecture projects by dRMM include a golden wedding chapel by the seaside and a house with mobile walls and roof.

The London Design Festival 2013 takes place from 14 to 22 September. See more design events taking place throughout the year on our World Design Guide.

See more unusual staircases »
See more projects by dRMM »


Dezeen Book of Ideas out now!

dRMM’s Sliding House features in the Dezeen Book of Ideas. Special offer: buy the book now for just £10 »

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Rio de Moinhos Open-Air Theatre by Ateliermob

This concrete staircase into the air by Lisbon architecture studio Ateliermob functions as a riverside amphitheatre on the banks of the Tagus in central Portugal (+ slideshow).

Rio de Moinhos Open-Air Theatre by Ateliermob

Positioned on the northern shore of the river near the village of Rio de Moinhos, the structure is built on the site of an old fishing boat dock that had fallen out of use due to regular flooding.

Rio de Moinhos Open-Air Theatre by Ateliermob

Ateliermob‘s brief was to create a public installation on the site. To withstand the changing water levels, the intervention needed a solid structure that would resist decay even if submerged for a few days a year.

Rio de Moinhos Open-Air Theatre by Ateliermob

The chunky concrete bleachers rise up in a northerly direction, facing a stage that cantilevers out across the riverbank. A telescope is mounted at the very top, while rectangular concrete benches and tables provide a picnic area on one side.

Rio de Moinhos Open-Air Theatre by Ateliermob

“The new element wipes out the boundary between land and water, projecting itself on the river, and on a flat terrain it erupts in the air as a reference in the landscape,” say the architects.

Rio de Moinhos Open-Air Theatre by Ateliermob

The Rio de Moinhos Open-Air Theatre is the latest in a series of riverside installations designed by Ateliermob for the banks of the Tagus since 2007.

Rio de Moinhos Open-Air Theatre by Ateliermob

Other amphitheatres on Dezeen include a summer theatre in Estonia and a stage set in Sicily designed by OMA.

Rio de Moinhos Open-Air Theatre by Ateliermob

Photography is by Zoraima de Figueiredo.

Rio de Moinhos Open-Air Theatre by Ateliermob

Read on for more details from Ateliermob:


Rio de Moinhos Open Air Theatre

Following an international competition for the banks of the Tagus River in four counties in central Portugal where ateliermob got the first prize, they were asked to design three projects in the municipality of Abrantes.

Rio de Moinhos Open-Air Theatre by Ateliermob
Site plan – click for larger image

Located on the right bank of the Tagus River, near the village of Rio de Moinhos, the Cais das Barcas served as a fishing boat dock and transported people and goods between the two banks. Over the years, that space lost its essence, both due to the nearly non-existent maintenance as the constant flooding of the Tagus (the height of the pier is +18.00 m, and the 1979 flood overflowed the river, which rose to 31.00 m).

Rio de Moinhos Open-Air Theatre by Ateliermob
Floor plan – click for larger image

Following a study of the dynamics of the local population, which can be characterised as having intense activity in recreational and popular associations, and it was understood that an outdoor space that could serve as an informal area for groups and communities and that could withstand submersion for a few days of the year. The new element wipes out the boundary between land and water, projecting itself on the river, and on a flat terrain it erupts in the air as a reference in the landscape.

Rio de Moinhos Open-Air Theatre by Ateliermob
Long section – click for larger image

The project seeks to recreate a place that spring-starts from the renovation of the pier, adding new collective reference meanings and uses. A new space for the local people that acts as a gathering place for the community or as an idyllic meeting place. The entire area around the auditorium, parallel to the existing dock, is redrawn maintaining its natural character, yet providing it with urban furniture – benches and tables for a more effective use by the population. Rio de Moinhos has experienced a difficult relationship with the river, noticeable its urban morphology – from times of flooding to times of drought. Every year, during the rainy season, this structure may become partially submerse.

The proposed structure seeks to reclassify the area, creating a new meeting space for the local community. When no events are taking place, this amphitheatre will be ideal to contemplate the river, the landscape and from its highest point, Rio de Moinhos.

Rio de Moinhos Open-Air Theatre by Ateliermob
Cross section – click for larger image

Project: Rio de Moinhos Open Air Theatre
Place: Rio de Moinhos, Abrantes, Portugal
Promoter: Câmara Municipal de Abrantes (city council)
Construction: Construforte – Sociedade de construções e Empreitadas, Lda
Architecture: ateliermob – Andreia Salavessa and Tiago Mota Saraiva with Vera João, João Torres, Ana Luísa Cunha, Zofia Józefowicz and Sophia Walk (competition: Carolina Condeço, Nuno Ferreira)
Structures: Betar Estudos – José Pedro Venâncio and Maria do Carmo Vieira
Lights: João Pedro Osório

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Helix Staircase by Matter Design

Helix Staircase by Matter Design

This half-scale model of a spiral staircase by American studio Matter Design is made from concrete treads that slip neatly over each other.

Helix Staircase by Matter Design

Above and top: photograph by Brandon Clifford

The Helix staircase by Matter Design was built at a reduced size to make it easier for the designers to experiment with heavy concrete modules.

Helix Staircase by Matter Design

The staircase also “celebrates its impracticality” at a smaller size, said designers Brandon Clifford and Wes McGee: “It is both column and stair, yet hangs from the ceiling. Its uncertainty and changed scale inject playful characteristics into the surrounding space, while maintaining an allegiance to the past and known.”

Helix Staircase by Matter Design

The treads were cast in a rubber mould clamped down by a carved wood mother-mould and then steamed for 12 hours to cure.

Helix Staircase by Matter Design

To build the staircase, each tread was hooked over a vertical rod and slotted against the tread below before being bolted down.

Helix Staircase by Matter Design

The design is on show until 15 May next to another staircase inside BSA Space, home of the Boston Society of Architects, as part of this year’s Design Biennial Boston.

Helix Staircase by Matter Design

We’ve featured a couple of concepts for spiral staircases recently, including one based on a whale’s backbone and another with fibreglass steps – see all staircases.

Helix Staircase by Matter Design

Other indoor uses for concrete include a lamp with a magnetic concrete base and a lamp shaped like a military listening device – see all concrete design.

Photographs are courtesy of Matter Design except where stated.

Here’s some more information from the designers:


Matter Design has announced the release of Helix as part of the Design Biennial Boston 2012 Exhibition at the Boston Society of Architects Space. This project is part of Matter Design’s research trajectory towards a contemporary stone architecture. Brandon Clifford and Wes McGee’s participation in this year’s Design Biennial Boston made this project possible.

As Clifford and McGee explain: “We have a pre-occupation with the translation of ancient and often lost methods into contemporary culture and practice. Helix is a product of an ongoing research agenda that centres on volume as an area of architectural exploration.”

Helix is a half-scale spiral stair. While this reduced size resolves a number of practical concerns —weight, liability, access — the piece celebrates its impracticality. It is both column and stair, yet hangs from the ceiling. Its uncertainty and changed scale inject playful characteristics into the surrounding space, while maintaining an allegiance to the past and known.

A second preoccupation of Clifford and McGee is what they term “plastic rhetoric”. The solid, heavy and volumetric action of casting concrete transforms a liquid matter into a solid mass that wants to crack. The stair’s rounded, plastic and curvaceous treads reflect the material’s earlier liquid state. Its twisting accelerates as it wraps around the support column, appearing to re-plasticise the figure. The entire construct’s organic and malleable appearance is counterintuitive in light of the zero-tolerance system of nesting and keying from unit to unit.

On Material and Fabrication

The stair is produced with precast unreinforced concrete. These treads are unreinforced to test some claims as the team move closer and closer to stone as a testing material. Unreinforced concrete has little to no tensile capacity making this project a structural prototype in collaboration with Matthew Johnson of Simpson Gumpertz & Heger. Each tread is cast in a fully encapsulated custom mould. These moulds are rubber with a solid wood mother-mould to clamp the assembly together. The moulds are vibrated rigorously during the pouring process and then immediately steamed for twelve hours to cure.

On Methods of Making

The entire stair assembly hangs from a beam two storeys tall. This beam then drops down a threaded rod to a base that serves as a pendulum balance. Each tread is designed to hook over this threaded rod and be bolted down to its neighbour below. The geometry of these treads lock into each other with a series of three-dimensional keys that reduce any shear or slipping between units. Typically a stone spiral stair is held from the perimeter. In this case, the stair is compressed in the column to ensure stability.

Credits: Brandon Clifford & Wes McGee — Matter Design

Structural: Matthew Johnson—Simpson Gumpertz & Heger

Project Team: Aaron Willette, Austin Smith, Christopher Miller, Daniel Clark, Edrie Ortega, Elizabeth Galvez, Enas AlKuhdairy, Johanna Lobdell, Justin Gallagher, Lina Kara’in, Luisel Zayas, Matthew Sherman, Patrick Little, Rebecca Priebe, Sixto Cordero

Acknowledgements: Fabrication support by the University of Michigan TCAUP FABLab and Simpson Gumpertz & Heger. Material donations by Boston Sand and Gravel (Aggregate and Additives), Lehigh Northeast Cement Company (Type III Cement), and Headwaters Resources, Inc. (Fly Ash)

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Folio Staircase by Disguincio & Co

Italian studio Disguincio & Co has produced a concept for a spiral staircase with steps made from folds of fibreglass.

Folio Staircase by Disguincio and Co

The Folio Staircase by Pordenone-based practice Disguincio & Co would comprise a repeated sequence of steps that slot into each other to make a spiral staircase.

Folio Staircase by Disguincio and Co

Each step is flexible and relatively weak, but when pieced together the whole staircase would become stable and robust, says designer Mirk Daneluzzo.

Folio Staircase by Disguincio and Co

The steps would be made from fibreglass reinforced with carbon fibre strips, although Daneluzzo hopes to utilise other materials in the future. “We are actually doing research to select environmentally sustainable solutions to have a natural fibre and bio-polymer-matrix composite,” he told Dezeen.

Folio Staircase by Disguincio and Co

For the moment there is no working prototype of the staircase, only a small model. “We are working to make it as soon as possible, in collaboration with some producers,” added Daneluzzo.

Folio Staircase by Disguincio and Co

We recently featured another concept for a spiral staircase using a single repeated element, this time based on a whale’s backbone.

Folio Staircase by Disguincio and Co

Other staircases we’ve published lately include flights of stairs floating in mid-air by artists Lang/Baumann and a ladder-like wireframe staircase leading to a mezzanine bedroom – see all staircases.

Folio Staircase by Disguincio and Co

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Beautiful Steps by Lang/Baumann

Mysterious flights of stairs float in mid-air or form elevated outdoor walkways in this series of installations by artists Lang/Baumann (+ slideshow).

Beautiful Steps by Lang/Baumann

Among the installations in Lang/Baumann’s Beautiful Steps project is a curved white staircase that hangs in the hall of Trautenfels Castle in Austria, contrasting with the richly coloured frescoes on the ceiling.

Beautiful Steps by Lang/Baumann

They also installed an open walkway that loops around the outside of the castle and is accessed by steps under the windows.

Beautiful Steps by Lang/Baumann

An aluminium staircase connected by false doors was constructed on the exterior of a building in Biel/Bienne, Switzerland. The building appears taller than it is because the grid of windows doesn’t match the ceiling heights, so the artists made their work to a slightly smaller scale than a normal door and stair to accentuate the illusion.

Beautiful Steps by Lang/Baumann

Another staircase with lopsided steps was installed between the floor and ceiling of a Parisian art gallery, Galerie Loevenbruck, and can be adjusted to different heights by adding or subtracting steps.

Beautiful Steps by Lang/Baumann

They also suspended a wonky staircase inside the Fundación PROA museum in Buenos Aires and planted an arched staircase on a lawn in Lausanne.

Beautiful Steps by Lang/Baumann

Swiss-born Sabina Lang and San Franciscan Daniel Baumann have worked together since 1990 and are based in Burgdorf, Switzerland.

Beautiful Steps by Lang/Baumann

Other unusual steps we’ve featured include a concept for a staircase based on a whale’s backbone and a suspended staircase that leads down to steps built into a kitchen counter – see all staircases.

Beautiful Steps by Lang/Baumann

See all installations »

Beautiful Steps by Lang/Baumann

Here’s some more information from the artists:


Beautiful Steps #2 – 2009 Biel-Bienne CH, Utopics. 11th Swiaa Sculpture Exhibition

Technique: steel zincked, anodised aluminium
Dimensions: 177 x 523 x 458 cm
Curator: Simon Lamunière

The congress building in Biel-Bienne plays a trick on perception: because the diminutive grid of its large glass front does not match the ceiling height of the floors, the building appears taller than it is—more like a skyscraper than its actual 50 meters (164 foot) of height. The building also features an unusual concrete structure that encloses one half of the volume like an oversize frame, leaving a gap on one side between itself and the building. On this pillar, almost three-quarters of the way up, an aluminum stair was attached, leading from one fake door to another around one corner of the structure. In keeping with the optical illusion of the building, the work was built to a slightly smaller scale than a normal door and stair. The slender sculpture plays with an imaginary functionality.

Beautiful Steps #3 (Trautenfels) – 2010 Schloss Trautenfels A, Regionale. Fabricators of the World. Scenarios of Self-will

Technique: wood, paint
Dimensions: 11.5 x 5 x 4.3 m
Curator: Adam Budak, Peter Pakesch

A white, curved stair, slightly askew and suspended in midair in a baroque castle hall, was held aloft by a few slender, almost invisible cables. The lean shape and the white surface of the sculpture formed a striking contrast to the lush frescoes on the ceiling.

Beautiful Steps #5 – 2010 Schloss Trautenfels A, Regionale. Fabricators of the World. Scenarios of Self-will

Technique: laminated wood, paint
Dimensions: width of the step 70 cm, height 110 cm, diameter 8 m
Curator: Adam Budak, Peter Pakesch

Two curved stairs ascended to two windows at right angles. Outside each window a curved walkway projected into the air and disappeared in a loop around the facade of the building. Viewed from the outside, the walkway could be seen to connect the two windows like a fragile band around the castle’s corner tower. Interior and exterior elements of the scultpture formed a complete circle.

Beautiful Steps #8 – 2011 Galerie Loevenbruck, Paris F

Technique: wood, lacquer
Dimensions: height 310 cm, diameter 250 cm
Courtesy: Galerie Loevenbruck Paris

A winding stair, slightly askew, was mounted between floor and ceiling of the gallery. Somewhat smaller in scale than an actual stair, the functional aspect of the sculpture was further diminished. This modular piece can be adjusted to different ceiling heights by adding or subtracting steps.

Beautiful Steps #9 – 2012 Vaudoise, Lausanne, CH
Technique: stainless steel, lacquer
Dimensions: 2.5 x 3.7 x 3.5 m

A fragment of an impossibly twisted circular stair rises from the ground and leads nowhere. While invisibly anchored in the ground, the sculpture inexplicably stands upright on its own. The first step is horizontal and parallel to the ground, but with each successive step the stair torques away from its original axis by 5 degrees until it projects into space at a steep angle. Adding to the drama, a continuous reduction in riser height emphasizes the foreshortening of the sculpture towards the top.

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by Lang/Baumann
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