What is a rib

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The vaulting rib is an architectural element that serves to wedge the roof, dividing the weight of the roof. The vaulting field is divided by arched ribs into smaller areas that are then laid. The space between the individual ribs is called the fill and the entire ceiling vault whole. In the most common case of vault crosses there are two ribs in the middle of the cross. Carved stone ribs were used in Europe in Roman architecture, in Gothic. In the Renaissance period they had a purely decorative function, and they have no technical purpose. The vault ribs are found as design elements in all historic buildings. In 19-20. century reinforced concrete and concrete vaults began to appear. The vaults are divided into cylindrical, monastic, cross.