Catalan vault

The Catalan turn or Volta tabicada is a turn of plain bricks, carried out ordering bricks on the flat part, that is, with the greater side of surface formed by the length and the width of the brick, which makes it much more light than the turns constructed with other methods or constructive systems. Geometrically guideline it is a cylindrical turn with its director arch very much reduced, or a turn vaïda with the generatrix arch and guideline arch reduced.