Iturranduz dam
| Iturranduz dam | |||||
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| Coordinates | 42 ° 36 '31 " N , 1 ° 53' 44" W | ||||
| Data on the structure | |||||
| Lock type: | Pier dam | ||||
| Construction time: | 2nd / 3rd-4th Century AD | ||||
| Height of the barrier structure : | > 4 /? m | ||||
| Crown length: | 102/150 m | ||||
| Base width: | 1 / 0.7 m | ||||
The Iturranduz Dam was a Roman dam near the Spanish municipality of Muruzábal de Andión, province of Navarre . The barrier structure was constructed as a pier dam and in its late expansion phase consisted of two dams.
The older one, about 100 meters long, was located downstream below the younger one. It was about 4 meters high and was formed from a 1 meter thick Opus Caementitium wall , which was supported on the valley side by nine square, 2.50 meter wide pillars. The wood imprints of the cladding required for construction can still be seen well in the remnants of the cementite. It was a very simple design, for which the designers did not use a cladding made of broken or house stones.
The second wall is also constructed only as a simple wall, but the supporting pillars, the number of which can be reconstructed with at least 15, are on the water side of the dam. Although the wall is 150 meters longer than the older construction, it is only 0.65 meters thick and significantly weaker. It was built from neatly laid stones in a mortar bond.
Both walls were only about five feet apart and the younger wall must be seen as reinforcement or repair of the older one, as the space between the walls was filled with earth from the excavation of the younger wall. In the younger wall remains of a extraction tower have been preserved, so that the water pipe to be supplied must have started at this point.
The original dam was built in the 2nd century, while the extension dates from the 3rd or 4th century. Fed by the Arroyo de San Pedro, it served to supply the Roman settlement of Andelos with water.
literature
- Miguel Arenillas, Juan C. Castillo: "Dams from the Roman Era in Spain. Analysis of Design Forms (with appendix)" , in: Santiago Huerta (Ed.): Proceedings of the First International Congress on Construction History: Madrid, 20th– 24th January 2003 , Instituto Juan de Herrera, Madrid 2003, ISBN 84-9728-070-9