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A groin vault or groined vault (also sometimes known as a double barrel vault or cross vault) is produced by the intersection at right angles of two barrel vaults. The word groin refers to the edge between the intersecting vaults; cf. ribbed vault. Sometimes the arches of groin vaults are pointed instead of round.

Groin Vault

A groin vault or groined vault (also sometimes known as a double barrel vault or cross vault) is produced…