Hamedan Sewerage Project by Pipe-jacking Method

Client: Hamedan Province Water & Wastewater Company
Financed by: Islamic Development Bank (IDB)
Partner: Mushrif of Kuwait
Project Management: Takhsis Pars Engineering & Management Company (TPEM Co.)
Consulting Engineers: Mahab Ghodss Consulting Engineering Co.
Type of Contract: PC (Procurement and Constraction)
Contract Period: 36 Months
Location: Hamedan, Iran
Status: Completed

Project Outline
The Hamedan urban sewer project was carried out by a joint-venture of Kayson and the Kuwaiti-based company Mushrif. The scope of work of the joint-venture involved supply, procurement, installation, testing, and operating polymer concrete pipes through pipejacking method. The total length of pipelines was 7,048 m with pipes of 1,200 mm and 1,400 mm diameters, of which 5,954 m was laid using pipejacking and microtunneling techniques. Because of inappropriate geological conditions of Hamedan City, 812 m of pipelines were constructed using open trench approach, while the remaining 282 m were installed via hand shield technology. In this project, special polymer concrete pipes were used. To supply the project with pipes from domestic resources, a factory belonging to Kayson Company was established and came online.

For lack of experience and specialty knowledge in choosing proper machineries, the pipejacking technique was not applied successfully in the country, until this project was done. The Kayson-Mushrif joint venture was able to successfully complete this project with the help of the client, consulting engineers and project managers. This endeavor would not have been possible without the cooperation and forbearance of the people of Hamedan and the city authorities.

Key Statistics

  • Reception & drive shafts: 64
  • Manholes: 64
  • 1,200-mm diameter pipes: 5,329 m
  • 1,400-mm diameter pipes: 1,564 m
  • 600 - 1,200 mm diameter branch pipes: 155 m
  • Excavation: 60,000 m3
  • Concrete: 8,000 m3
  • Formwork: 12,000 m2
  • Reinforcement: 628 t

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