Iturranduz Dam

The Iturranduz Dam was a Roman dam near the Spanish community Muruzábal de Andión, Navarra province. The shut-off was designed as a buttress dam and was in his late expansion phase of two dams.

The older, about 100 meters long dam was located downstream below the younger. She was about 4 meters high and was formed from an approximately 1 meter thick Opus Caementitium - wall that was the downhill side supported by nine square, 2.50 -meter-wide piers. The wood prints the time required for construction formwork are still visible in the Caementitiumresten. It was a very simple design, which were waived, the designers at a fraction of formwork or building a.

The second wall is also designed only as a simple wall, but there are the supporting pillars, their number can be reconstructed with at least 15 on the water side of the dam. The wall is, although with 150 meters longer than the older design, with just under 0.65 meters thickness significantly weaker. It was built of neatly layered stones laid in mortar Association.

Both walls were only about 1.50 meters apart and the younger of the wall must be older viewed as a reinforcement or repair, as the space between the walls was filled with soil from the excavation of the younger wall. In the recent Wall, remains of an extraction tower have received, so at this point to be supplied water pipe must have begun.

The original dam was built in the 2nd century, the expansion comes in contrast, from the 3rd or 4th century. From the Arroyo de San Pedro fed, they served the water supply of the Roman settlement Andelos.