[....] As previously mentioned, the transverse arches are oval arches. The small arches in its ends determine the tas-de-charge. The tangential point between the arches of the oval is the maximum level that the tas-de-charge should reach (photo 17).

Once the voussoirs, the crossings and the tas-de-charge are carved, we proceed to the construction of the vault (photo 18, 19, 20).

Once the centerings finished, we continue with the placement of the transverse arches, then the voussoirs and the crossings of the main direction. Finally, the grid is completed with the placement of the voussoirs of the secondary direction (photo 21).

The vault is not fully complete until the wooden centering has been removed. Only then the vault reveals all the beauty of its geometry (photo 22,23).

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