Designtreppe in Frankfurter Hotel

Design staircase at nhow hotel

Golden rings around design staircase

Similar to oversized coins, the golden rings surround the spectacular design staircase in the Frankfurt hotel nhow.

Project description

Design staircase at nhow hotel in Frankfurt

In Frankfurt’s western banking district, the 190 m high tower “ONE” was built as a mixed-use project. At the time of construction it was the sixth tallest building in Germany. With clear lines, digital infrastructure and an exceptional mix of hotel and office facilities, the 47-storey skyscraper developed by CA Immo sets a new standard for openness, networking and teamwork.
A special quality are the many awards of the building. It was the first high-rise in Germany to receive a “WiredScore” platinum certification for best connectivity. In addition, the German Sustainable Building Council (DGNB) awarded the project with the pre-certificate in platinum. Furthermore, the “ONE” earned the SmartScore certificate, also in platinum, for exceptional smart user experience and future-proof design. The building was also nominated for the International High-Rise Award 2022/23.

Golden rings encircle design staircase

14 levels of the building are used by the 4-star superior hotel nhow with 375 rooms, restaurants, conference areas and a sky bar. The ascent from the hotel lobby to the restaurant on the first floor goes up an impressive design staircase in ellipsoidal style. The Spanish design studio Rafael de la Roz followed the hotel’s design concept “The Art of money” when designing the golden sculpture. The superimposed golden rings surrounding the design staircase are inspired by the unpredictable falling of coins and convey movement and lightness. The aesthetic paling balustrade of the design staircase is completed by a handrail made of a round stainless steel tube with LED lighting, which provides both harmonious and safety-relevant illumination.

Designtreppe in Frankfurt
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Project details

Ellipsoidal rounded design staircase

  • both-sided flat-steel stringers masking the treads
  • steps in folding design welded in between the stringers, closed treads and risers
  • 32 steps, 34 risers
  • including an intermediate and a stair head landing
  • effective flight width of the design staircase approx. 1,280 mm
  • stringer height approx. 500 mm, stringer thickness 20 mm

Paling balustrade for design staircase

  • steel railing with vertical filling bars
  • handrail made of 34 mm stainless steel round tube with LED lighting
  • upper chord made of 40 x 10 mm flat steel
  • railing infill consisting of 40 x 10 mm flat steel, welded in at spacings of approx. 120 mm between upper chord and stringer
  • running on both sides of the design staircase

Ring elements with external structure

  • ring 1 (ceiling 1st floor): 15 mm flat steel, construction height approx. 300 mm, serving as supporting structure for the following ring elements
  • ring 2-5 (staircase): 4 ring elements of approx. 450 x 75 mm each, in ellipsoidal rounded design
  • box-type section of 2 steel sheets
  • upper and lower chord with an inward offset of 25 mm for LED cove
  • outer fluting with sections in 50/50 mm grid and a structure of 20 mm

Quote omniCon:

“We engaged the best staircase builders in Germany. The colleagues from MetallArt have a huge wealth of experience in the realisation of stair sculptures and an incredibly high level of craftsmanship, which they also demonstrate here with us at ONE.”

hp Developments GmbH, Frankfurt