Sculptural steel stringer staircase | LichtBlick
2023, Hamburg
The stunning balustrade stringer stairs in the new head office building of LichtBlick, a Hamburg-based green electricity provider, captivate with an aesthetic material mix and modern LED lighting on the bottom of the wooden handrail.
Unique stringer staircase
The sculptural, evenly rounded stringer staircase by METALLART is one of the highlights in the inviting new head office of Germany's largest pure green energy provider LichtBlick. From planning to furnishing the new offices at Klostertor 1 in Hamburg, apoprojekt GmbH has realised a holistic concept.
The atmospheric appearance of the parapet-high steel staircase is emphasised by the oak handrail with a light cove on the underside of the outer stringer. The wooden treads and the stair head landing provide a harmonious contrast to the black lacquered, parapet-high steel balustrade. HolzHacker supported us as our partner company in the realisation of the wooden elements.
Stringer stairs as special eye-catcher
The sculptural, evenly rounded stringer stairs by METALLART are the highlight of the inviting new building and connect the ground floor with the upper floor. The METALLART experts installed a modern light cove in the upper area of the inner and outer balustrade stringers. The client fitted an LED strip inside the light cove. This LED strip illuminates the 24 steps of the impressive, single-flight stringer stairs and creates an atmospheric appearance for the steel staircase. The pure light cove opening on the underside is only approx. 25 mm. On the outer stringer, a rectangular handrail made of European oak creates a harmonious contrast to the black lacquered, parapet-high railing. The layered gluing of the wooden handrail guarantees the greatest possible stability. Holz-Hacker supported us as a partner company in the construction of this staircase element.
Insights
Project details
- Diameter inner stringer: 900 mm
- Diameter outer stringer: 3,700 mm
- Effective flight width stringer staircase: up to 1,400 mm
- Tread step construction: folded construction made of approx. 5-8 mm thick steel sheet
- Risers: 24 pcs
- 1 stair head landing
- Stringer thickness: approx. 10 – 15 mm
- Stringer height: approx. 1,370 – 1.470 mm
- Structurally supporting, smooth soffit cladding made of steel sheet
- Exactly shaped steel sheets according to the stairs flight; flush-welded on the underside
- Significantly improved statics and improved vibrational behaviour of the stringer stairs
- For guaranteed prevention of cracking:
- no plasterboard cladding,
- no overall filling and
- no acrylic joints to the stringers
Architecture
apoprojekt GmbH
Photos
LichtBlick
