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