Parametric Staircase

EPFL CNPA, Stereotomy, Fall 2023

This project explored parametric modeling, material selection, and fabrication processes by designing a double helical staircase. Using TopSolid, we developed a fully parametric model that integrates material and fabrication considerations for granite construction.

The model allows control over parameters such as the number of floors, number of steps, or height of each step, the width of the stairs, the interior and exterior radii of the staircase, rotation of the staircase, as well as the width and placement of landings.

Each step and landing was designed as modular components to integrate seamlessly into the structure while allowing for adaptability in specifications. Granite was selected for its strength, durability, and aesthetic qualities, as well as its suitability for precise sculpting and environmental sustainability. Steps are cut from single stone blocks, optimizing material use and assembly precision. Pre-fabricated elements are anchored into a load-bearing wall, with cantilevering supported by embedded reinforcements. Construction options include temporary scaffolding or simultaneous wall and staircase assembly for stability.

Group project with Milos Cernak, Diama Bassé and Célia Barmann