Voussoirs

Definition

Voussoirs are wedge-shaped stones that make up an arch or vault. They are carefully arranged to create a curved structure that distributes weight evenly.

Related terms

Keystone:

The central stone at the top of an arch, which holds all the other voussoirs in place.

Groin Vault: A type of vault formed by intersecting two barrel vaults, made possible by using voussoirs.

Roman Architecture: Many ancient Roman buildings showcase impressive use of voussoirs in their arches and vaults.