lierne vault

In Gothic architecture,  a vault that incorporates tertiary ribs that span the spaces between other ribs, creating ornamental patterns. The lierne vault came into use in England and France in the 14th century CE. Also known as a stellar vault.

Lierne_vaultDiagram of the lierne vault in the choir of Ely Cathedral, England. First half of the 14th century. The black lines are the tertiary ribs.