Post Tension Staircase Natural Stone Gascogne Blue

Sculpted to Elevate.

More than a way up — a statement in stone.

Viriatum designs post-tensioned staircases in solid stone: sculptural, self-supporting, and tailored as statement pieces for architectural spaces.

Merging architecture, design, and structural engineering, this approach redefines what stone can do. Advanced technologies and parametric tools allow us to explore new geometries, spans, and sensations — bringing lightness to weight, and movement to mass.

A staircase that doesn’t just connect levels, but elevates the entire project.

Tailored in Form, Material, and Every Detail

STONE AND FINISH

Choose from our curated selection of natural stones and surface treatments — from honed to textured, raw to polished.

STAIR TYPE

Spiral, curved, straight, cantilevered, or L-shaped — the form adapts to the space and the atmosphere you want to create.

STEP GEOMETRY

Shape the physical character of the steps — from the underside profile to the nosing, thickness, and edge detail. Subtle shifts here define how the staircase is perceived from every angle.

HANDRAIL

Define the gesture — integrated or independent, in stone, wood, or metal. Customise its line, finish, and presence to suit the composition.

ANTI-SLIP DETAILS

Subtle safety interventions, integrated with the design — from grooves to surface texturing, never compromising aesthetics.

Meadow Hill Residence
Meadow Hill Residence
Old Westbury, New York

Meadow Hill Residence

Carved from Massangis Jaune Clair, this post-tensioned staircase balances weight with precision, appearing lighter than its mass suggests. A darker timber handrail and aged copper railings introduce warmth and patina, sitting comfortably between classical detail and contemporary restraint.

Central Park West
Central Park West
New York, New York

Central Park West

Cut from Gascogne Blue, this post-tensioned staircase brings a cooler, more graphic presence, with subtle tonal shifts across the stone. Copper railings introduce a warm counterpoint, sharpening the contrast. Set within a New York penthouse, it reads as both structure and statement—precise, deliberate, and quietly assertive.

Staircase FAQ

1. What is a post-tensioned stone staircase?

A post-tensioned stone staircase uses structural tensioning to connect solid stone steps into a self-supporting system. This allows the staircase to achieve a precise architectural expression while maintaining strength and stability.

2. Are Viriatum staircases made from solid natural stone?

Yes. Viriatum staircases are developed using natural stone, with each step designed, engineered and fabricated according to the structural and visual requirements of the project.

3. Can a post-tensioned stone staircase be customised?

Yes. Each staircase can be tailored in stone type, step geometry, finish, handrail detail, anti-slip treatment and overall configuration, depending on the project and technical requirements.

4. Does Viriatum provide structural coordination?

Yes. Post-tensioned stone staircases require careful coordination between design, engineering, fabrication and installation. Viriatum can support the process with technical development and coordination with the project team.

5. Which stones are suitable for post-tensioned staircases?

The suitability of each stone depends on its structural properties, dimensions, finish and intended use. Viriatum reviews each material carefully before confirming whether it is appropriate for a staircase.

6. Can Viriatum design staircases for international projects?

Yes. Viriatum develops bespoke stone staircases for international projects, working with architects, designers, engineers and contractors to coordinate design, production and delivery.