Spiral stairs
Spiral stairs for shaping
In addition to the functionality, the expressive staircase form is to be emphasized. In modern architecture, spiral staircases have become a design object.
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Spiral stairs as design feature
In the beginning of staircase construction spiral stairs mostly were constructed because of their low space requirements. These days they often can be found as large staircase constructions in generous stairwells or in foyers of representative buildings. Beside their functionality it is, above all, the expressive stairs design which plays a major role. In modern architecture spiral stairs became an important design object.
Spiral stairs for spatial shaping
For spiral staircases, the shape is already defined by the name. In contrast to the newel staircase, the steps of this type of staircase are arranged around a central staircase eye. This staircase eye can have different forms: it can be circular or have the form of a circle section. This depends on the diameter of the staircase and the respective floor heights. There are also elliptical floor plans with a corresponding elliptical staircase eye. Due to this expressive design, the significance of spiral staircases extends primarily to their function as a creative design element.
References
Parapet-high steel balustrades | Charité Berlin
In different versions parapet-high steel balustrades impressively set the scene for the staircases in the Rahel Hirsch Center.
Design staircase featuring golden rings | nhow hotel Frankfurt
Golden rings resembling coins encircle the imposing design staircase in Frankfurt's 4-star superior hotel nhow.
Magic surface for interior staircase | Villa Cologne
An elaborate finish with liquid metal turns the curved interior staircase into a stunning masterpiece!
Ambitious design for spiral staircase | Maria Ward School
The three-storey balustrade stringer stairs in the aula of the ultra-modern school complex in Nuremberg excels as a bespoke top-class construction.
Flat-steel stringer stairs | Residence Münster
The flat-steel stringer stairs blend into the exclusive interior of the building with a grandiose homogeneity.
Spiral staircase with glass railing | WINX Tower Frankfurt
An elegant spiral staircase with all-glass railing and fall-preventing parapet-high stringer impresses in the WINX Tower in Frankfurt.
Steel spiral staircases & all-glass railings | Building 2 in Basel
In the Roche office tower, 16 steel spiral staircases with curved glass railings characterise a brilliant staircase archictecture.
Stringer staircase featuring glass railing | TaunusTurm Frankfurt
The high-gloss polished stainless steel ring surrounding the elegant stringer staircase in TaunusTurm Frankfurt/Main captures attention.
Curved steel stairs on the Bühler Innovation Campus in Uzwil
MetallArt manufactured a design staircase for the research center, with a perfect interaction of steel and glass.
Exquisite interior stairs | FIRMAMENT in Rankweil
The glamorous interior stairs in the Rankweiler FIRMAMENT are characterised by their circular construction of three different radii and their extraordinary colour scheme.
Expressive spiral staircase | Lilienthalhaus Braunschweig
The ellipsoid rounded spiral staircase in the bright atrium elegantly links the four levels of the Lilienthalhaus in Braunschweig.
Aesthetic sculptural staircases | BITZER Headquarters
Even from the outside, the sculptural staircases in elegant white at the headquarters of the international group of companies are fascinating.
Ellipsoidal steel stairs | Max Mara in Vienna
The sculptural steel staircase construction with all-glass railings sets the highest design standards in Max Mara's upscale boutique.
Sculptural stairs featuring changing radii and flight widths
In addition to the change in flight widths and radii, the sculptural stairs also stand out for their asymmetrical design of the steel soffit.
Stringer staircase at EVF Göppingen
The modern stringer staircase with light cove and underside cladding attracts the visitors of EVF in Göppingen.
Rustic design stairs | Burgerlich in Hamburg
The design staircase in Hamburg's Burgerlich restaurant perfectly complements the ambience with its dark wood and steel elements.
Impressive rounded designer staircase with LED handrail lighting
The highlight of the designer staircase is the innovative LED handrail lighting.
Steel balustrade for spiral stairs
A representative sculpture staircase convinces visitors to the Berger-Lacke company in Grünstadt.
Steel staircase with wooden treads
In addition to its function as a staircase, this steel stair construction is the focal point of a large hall.
Noble folded staircase with box-type stringers
The parapet stringers are constructed in closed box form with internal stiffening ribs.
Sculptural shapes for stairs
The floor plan for the stair construction is evenly rounded from the first floor to the upper floor.
Design in glass and steel
The full-surface screen-printed surface serves to prevent slipping and ensures a safe step.
Glass railing and parapet-high stringer
A special feature is the positioning of the stairs on a concrete base with two steps.
Parapet-high steel stringers | Joachim Herz Foundation
The rounded steel construction is a real eye catcher for visitors.
Something old, something new
The harmonious contrast of the materials mirrors the elegant residential style.
Glass railing for steel stairs | Vector Informatik GmbH
Our elegant steel stringer staircase, covering four storeys, presents itself in the foyer of the company building.
Steel Staircase | Medical Centre Dortmund DOC
The design of the steel staircase is elegantly continued on the first and second floor.
Stairs steel + wood for a cosy ambiance
With wooden beams and visible masonry made of natural stones, the steel stringboard staircase blends harmoniously into the overall picture.
Glass railings as design elements for stairs
The innovative stairs with glass railings were combined with elements of Corian.
Design for Steel Staircase– KSK Boppard
This staircase convinces by the harmony of steel and wood in combination with stainless steel elements.
Curved sculptural stairs at Heraeus
The sculptural stringer staircase with smooth-surfaced steel soffit cladding impresses with its light and flowing appearance.
Sculptural staircase with extraordinary railing design
The staircase sculpture in Munich gets an unmistakable character by the extraordinary railing construction.
Steel stairs with balustrade stringers
Another eye-catcher of the steel stairs is the illumination by a light voucher, which gives a stylish design.
Balustrade stringer stairs at Augsburg Beethovenpark
As a visual highlight, the design staircase in white with parapet-high flat steel stringers on both sides is impressive.
Parapet-high stringer stairs at the five-star-plus hotel The Fontenay
The steel stringer staircase captivates by the glass railing of the piano bar with rounded design and imposing shape.
Spiral steel stringer stairs at the Futurium in Berlin
As a place for presentation and dialogue, the Futurium in Berlin brings together politics, science, business, art and society.
Stairs at the Max Delbrück Center for Molecular Medicine in Berlin
The stringer staircase with parapet-high steel stringers connects all five floors of the Max Delbrück Center in Berlin.
Daimler Benz in Stuttgart/Sindelfingen
This extravagant staircase presents itself like a sculpture in the foyer of the Mercedes Benz factory in Stuttgart/Sindelfingen.
Spiral stairs in the savings bank in Bayreuth
The self-supporting spiral staircase blends perfectly into the ambience thanks to its matching paint finish.
Design stairs at the Steelcase Learning + Innovation Center Munich
The surface of the steel soffit cladding was supplied and installed with a primer coating for painting by the customer.
Curved glass railings for spiral stairs
MetallArt has taken up the challenge of the high requirements in glass construction.
Folded steel stairs at Hotel LAMAISON in Saarlouis
A harmonious contrast due to the noble wood covering and the balustrade painted in modern white.
Glass railing in the Prediger light shop in Hamburg
With this glass railing, the panes protrude freely from the supporting structure - without disturbing posts.
Aesthetic Design for Steel
The stair construction made of L-profiles captivates by the optics of the curved perforated sheet railing.
Staircase in the foyer of the Commerzbank Munich
From the basement to the second floor, they spiral upwards evenly rounded like a spiral.
Stairs with glass railings in the foyer of the KfW Bank in Frankfurt
The soffit cladding of sheet steel gives the staircase the character of a modern architectural style.
Steel staircase in the foyer of the LBBW Göppingen
In noble design the stair railing convinces with double flat steel posts and a railing filling.
Spiral stairs in the PANEUM in Asten
MetallArt was responsible for the spiral staircase and glass parapets as well as for the site management.
Design stairs in Seehotel Riva in Constance
In the Seehotel Riva in Constance these extravagant stairs present themselves in exclusive design.
Remarkable staircase architecture in sculptural design
This rounded design staircase with parapet-high steel stringers was created for a detached house in the Zurich Oberland.
Folded stairs | Design in steel and wood
The parapet-high flat steel stringers underline the imposing look of the steel stairs.
Stairs featuring a stylish design
As an outstanding architectural highlight, the self-supporting stair construction is convincing.
Arched stairs for every purpose
Spiral stairs or newel stairs
Instead of an open staircase eye, spiral staircases can also be constructed with a central, continuous tube or column. Then you speak of newel staircases. In contrast to a spiral staircase, the diameter of a newel staircase is usually much smaller, since newel staircases are usually used as stairs for apartments. However, there is nothing to prevent it from being used as a main staircase if the stair diameter is sufficiently large. Also for outside stairs the choice falls gladly on a newel staircase. While steel or stainless steel is used for internal stairs, the choice for external stairs is a galvanized steel newel staircase. A newel or spiral staircase is also known as an “arched staircase”.
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- Newel stairs with glass or wooden steps
- Newel staircase with external balustrade
- Newel staircase with steel or stainless steel railing and wooden handrail
- Spiral staircase as foyer stairs for commercial buildings and banks: with generous floor heights and spacious diameter for a pleasant flight width
Spiral stairs in architecture
At the beginning of the planning of a spiral staircase / arched staircase you have to decide which material to choose: wooden stairs, concrete stairs or steel stairs. Alone due to the processing possibilities of steel, the decision is therefore quickly made for a metal staircase. Probably the most common construction method for a spiral staircase is the construction as a stringer staircase – depending on the static requirements as flat steel or box stringer staircase. With the help of CNC-controlled laser technology, the steel stringers are lasered out of a sheet metal plate and then rolled according to the stair shapes. Due to the static properties of steel, the cross-sections can be significantly smaller than the stringers of wooden stairs.
With stringer stairs in open building method a multiplicity of design possibilities are open to you:
- Wooden steps and wooden handrail as a contrast to the steel stair construction
- Glass steps with an anti-slip screen-printed surface: depending on the degree or pattern of the screen printing, this can also have a creative influence. Stairs with glass steps are also called glass stairs
- Steel or stainless steel railing with horizontal or vertical filling bars
- Railing with double flat steel balusters
Likewise, stair constructions with soffit cladding have established themselves as a stylistic element in modern stair construction. For this type of construction, too, the material steel has the best possible properties, so that visually and architecturally sophisticated soffits are possible. Due to the closed soffit, the step construction of these staircases is designed as a folded structure. These so-called folded stairs are then covered with wooden steps.
Spiral staircase as sculpture staircase
A special form of the two stringer stairs in modern design are stringer stairs, where the inner and outer stringer serves as steel balustrade / railing. In this design, the steel steps are welded between the stringers of the staircase as a substructure for the tread covering. In addition to the open construction method, constructions with folded treads are currently becoming more and more popular. Here the horizontal treads are closed by vertical risers. As harmonious contrast usually wood steps in oak or beech are selected as step covering. As upper conclusion for the railing a stainless steel or wooden handrail can be put on when desired. Also constructions with an internal wooden handrail are very popular.
Spiral staircase as single stringer or saw tooth staircase
Apart from the construction as stringer stairs spiral stairs are also designed as single stringer stairs. The substructure for the treads is fastened on the supporting stair rail. The stringer can be in the form of a round tube or be box-shaped or triangular. Usually the spar is constructed in the middle. One speaks then also of central stringer stairs. For this construction of a spiral staircase, steps made of wood or glass are suitable.
Another special form is the sawtooth staircase, which can also be used for spiral staircases. Two sawtooth-shaped cut flat steel stringers serve as staircase construction, on which mostly wooden steps are then placed. The cutting of these sawtooth stringers is done by CNC-controlled laser technology. Stainless steel railings or railings made of steel with double flat steel posts are suitable as railings for single stringer stairs or sawtooth stairs.
Spiral stairs according to DIN 18065
For a spiral staircase, the minimum and maximum dimensions for usable stair flight width, stair gradient and stair tread as specified in the Staircase DIN must not be exceeded or fallen short of due to manufacturing and installation tolerances. These dimensions must therefore be planned in such a way that the values can be maintained in the finished state.