sustainable : Payab, jo or pakne, is a sloping corridor that is dug in the heart of the earth, and in this way, it is possible for people to use the flowing water of the aqueduct. This corridor was always built perpendicular to the path of the aqueduct to prevent the possible collapse of the aqueduct gallery. In the past, all the payabs had ponds and were a place for washing, bathing and supplying water. Of course, the use of water was not only for providing water for washing and sometimes for drinking; But in addition to that, it had other functions that were woven into the social structures of the city, and among them, it can be used to show the demarcation of social classes, wealth and authority, creating a temporary shelter or stronghold during insecurity, providing a place for gatherings and social interactions and exchanging information and He also mentioned a cool place to escape from the hot summer days. The internal environment of Payab has a constant temperature between 28 and 29 degrees centigrade in all seasons of the year due to the feature of the underground building and the proximity to the water of the aqueduct.
When the aqueducts passed under cities or desert villages, it was possible to find a winding path and constantly deviate to the left and right. In this way, more houses would have the chance to have footpaths and access to qanat water. 38 aqueducts have been carved on the Zarch aqueduct in Yazd city, and the first one is the Golkar aqueduct located on Shahid Asizadeh Boulevard, which was restored by Haj Mohammad Ali Golkar about 100 years ago, and his name was preserved on the aqueduct. The second payab is Goudars Payab or Shahriari Pit, adjacent to Goudars Hospital, which was restored 150 years ago by Arbab Mehraban. The last tributary is Koushk Nou tributary in Koushk No neighborhood, the water entering Wazir’s mill passes through this tributary.

the mill : In Yazd, almost all mills work with aqueduct water, and without using them, where it was not possible to use other driving energy such as wind or river, people had to turn wheat into flour with manual mills. The work of the mill is based on the energy obtained from the water that flows from the aqueduct into a well called Tanureh Hedayat, accumulates there, and then exits from the end of the tanure through a narrow channel and rotates the blades of the mill with high pressure. The rotation of the blades leads to the rotation of the stone on the mill and finally the grains between the two stones turn into flour.

Wazir mill : According to the available oral history, the minister’s mill was built in the Al-Muzaffar era by the order of the then ruler inside the city walls on the Zarch aqueduct. This mill was placed inside the fence so that if the fences of the city were closed due to conflict and war, people would not have problems. The Wazir mill was still standing until 65 years ago and supplied the flour needed by the people. The strategic importance of this mill can be understood due to the width of the stairs where two four-legged animals could easily pass each other, the size of the mill space and its proximity to the city wall.

Zarach aqueduct route : The source of Qanat is near the village of Fahraj, which enters Yazd city after passing through villages such as Khoidek, Dehnu, and Akramiyeh and passes through various neighborhoods of the city, including Amir Chakmaq Square. After passing through Jame Mosque, the Qanat water leaves Yazd city and moves towards Zarch.