Zarauz gate arched doorways or cutback, in a way more “crushed” the Arch of half point, by having a single geometric center below the fascia, only master carpenters are able to assemble it “no swearing”.

The flattened arch is, therefore a sector of circumference. This arch is different from the arch in which the sector Center below the fascia doing that in the springers circumference sector do not a tangency.

When this arch over a door, or window is, it is often called “escarzana”, and his bow usually corresponds to the sixth part of a circumference (i.e. 60 °). This combined with a reinforcing lintel arch located in sometimes. This type of arch was used in Roman architecture, Romanesque and Plateresque, as it can be seen on the facade of the University of Salamanca.