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Floating UHPC stair, private residence

A spiral stair comes out and a cantilevered UHPC stair goes in. The finished stair stays under wraps until handover.

Element
Cantilevered stair treads
Material
UHPC
Tread finish
Marble, granite, porcelain or epoxy
Status
Under construction
The original spiral stair before the project

Before

Blurred preview of the new floating stair

After, in progress. Revealed at handover.

What is changing

The house had a closed spiral stair. It is being replaced with separate cantilevered treads, so each step reads as one floating slab and the stairwell opens up.

Why UHPC

A floating tread is held at one end only, so it has to be slim and very strong at the same time. UHPC is far denser and stronger than ordinary concrete, which is what makes a tread like this possible.

Keep looking

Let’s cast something.

Any size, any finish, and one-off pieces are welcome.

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Phone
+251 983 388 315
Phone
+251 966 709 080
TikTok
@utopia.composites
Workshop
Figa, Noah Real Estate, Addis Ababa