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Works register

Black Arc

Graphite steel surface catching a narrow band of light
Object / YearW–036 / 2025
LocationSetúbal, PT
ClassificationArchitectural installation

Dark rolled steel, touching nothing but the two walls it spans.

A monumental black steel arc spanning a shadowed passage

An eight-metre compression arc balanced between two existing walls.

Black Arc was designed for a passage that already carried the memory of industrial use. The piece avoids touching the floor. Its force travels laterally into two concealed bearing plates, leaving a dark interval overhead.

The surface was ground directionally before blackening, so daylight catches the structure in long, uneven bands. Nothing is ornamental; every visible thickening corresponds to a real change in load.

  • F–01Built in transport sections
  • F–02Pinned site joints
  • F–03Deflection checked on installation
Next object / W–029Weight of Air