2003-2005
Design and construction supervision for groundwater drainage system of Mosalla in Tabriz
Tabriz - Iran
The grand Mosalla is located at the heart of Tabriz in Iran. The site has 180m length and 100m width and both old and the new Mosalla (Arg) are located there. Construction of the new Mosalla was started in 2001. Due to the changes in groundwater conditions of Tabriz, after 7.5m depth excavation, the ground water level increased and covered the foundation surface. The client decided to decrease the groundwater level to a level under the foundations and Kuban-Kav Consulting Engineers, as the main geotechnical consultant of the project, invited me to design and supervise this project as a sub-consultant.
After number of site visits, in situ tests, preliminary designs and meetings, I finished the design by using a passive drainage system formed by series of wells and tunnels network in 2003. During the construction period by Pey-Eskan-Azar Company, I had many site visits for construction supervision and monitoring of the changes in ground water level in few piesometers. According to the results of the monitoring, I modified the primary design to reduce the costs and time.
Construction of the system had been finished in May 2005 and according to the last discharge monitoring conducted by the contractor, client asked for a pump station to discharge the drained water out of the site. Pump station have been designed in civil, mechanical and electrical disciplines in August 2005. The last observations show that the water level is about 1.5m below the foundation.