Before revision: The simplest examples, resulting from the intersection of two or more vaults and the successive subtraction of the excess volumes, are: The Groin vault or Cross Vault, resulting in a set of lunettes (either of circular or pointed vaults); The Domical Vault - and the particular case of the Cloister - which is formed by a set of fuses; The Umbrella Vault, a set of ribbed fuses, joint at the top and terminating in lunettes at the base; The Pendentive or Penditive dome, generated by subtracting volumes from a dome; The Saddle Vault, generated by either translating one parabola through a second one or by a ruled surface.
After revision: The simplest examples, resulting from the intersection of two or more vaults and the successive subtraction of the excess volumes, are: The Groin vault or Cross Vault, resulting in a set of lunettes (either of circular or pointed vaults); The Domical Vault – and the particular case of the Cloister – which is formed by a set of fuses; The Umbrella Vault, a set of ribbed fuses, joint at the top and terminating in lunettes at the base; The Pendentive or Penditive dome, generated by subtracting volumes from a dome; The Saddle Vault, generated by either translating one parabola through a second one or by a ruled surface.