Diaphragm arch

A diaphragm arch is a transverse wall-bearing arch forming a partial wall dividing a vault or a ceiling into compartments[1] while also bracing the walls.

[2] When used under a wooden roof (with solid spandrels) it has the advantage of providing a partial firebreak.

[3] It was first used in Roman Syria, during the 2nd century AD.

[4] The diaphragm arch is present in Islamic, Carolingian, Ottonian and Romanesque architecture.

This architectural element–related article is a stub.