1. Piping works for the wastewater network of District 2 of Area NW 1-3, segment three:

  • Employer: Tehran Wastewater Company 
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: 1.745.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250mm x 4,734m (in traditional tunneling method) and implementation of 132 concrete manholes

2. Piping works for the Wastewater network of Saa’dat Abad , Area 2NW :

  • Employer: Tehran Wastewater Company 
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: 498.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 600mm x 689m (in traditional tunneling method) and implementation of 22 concrete manholes

3. Piping works for the wastewater network of District 2 of Area NW 1-3, segment four:

  • Employer: Tehran Wastewater Company 
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: 1.753.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-400 mm x 869-3922 m (Total 4784 m), (in traditional tunneling method) and implementation of 111 concrete manholes.

4. Piping works for the wastewater network of Moshiriyeh, Area 5SE2:

  • Employer: Tehran Wastewater Company 
  • Consultant: Mahab Ghods Consulting Engineers Co.
  • Contract price: 385.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-300 mm x 400-3100 m (Total 3500 m), (in traditional tunneling method) and implementation of 63 concrete manholes

5. Piping works for the wastewater network of Saa’dat Abad , Area 1-2NW-6 & NW2.

  • Employer: Tehran Wastewater Company
  • Financer: World Bank
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: 5.488.000.000 Rials
  • Project status: FAC
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-300-400 mm x 364-300-13326 m (Total 13990 m), (in traditional tunneling method) and implementation of 400 concrete manholes

6. Piping works for the wastewater network Saa’dat Abad , Area NW 1-4

  • Employer: Tehran Wastewater Company 
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: One 1.713.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-300-400 mm x 551-319-4549 m (Total 5419 m). (in traditional tunneling method) and implementation of 114 concrete manholes.

7. Piping works for the wastewater network of District 4 of Area NE 3-2 Tehran Pars, segment 5.

  • Employer: Tehran Wastewater Company 
  • Consultant: Pars Ab Tadbir Consulting Engineers Co.
  • Contract price: 6.183.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-300-500-600-700 mm x 9152-538-1984-171-78 m (Total 11323 m) (in traditional tunneling method) and implementation of 218 concrete manholes.

8. Piping works for the wastewater network of District 4 of Area NE 3-3 Tehran Pars, segment A.

  • Employer: Tehran Wastewater Company 
  • Consultant: Pars Ab Tadbir Consulting Engineers Co.
  • Contract price: 4.506.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-300-400-500 mm x 7930-1665-186-364 (Total 10145 m) (in traditional tunneling method) and implementation of 201 concrete manholes.

9. Piping works for the wastewater network of Razan in Hamedan Province

  • Employer: Hamedan Water &Wastewater Company 
  • Financer: World Bank
  • Consultant: Mahab Ghodss Consulting Engineers Co.
  • Contract price: 7.499.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

Performance of Piping Works for a Wastewater Polyethylene Pipeline with diameter of 250-300-350-400 mm x 79308367- 208- 941 and 647 m (Total 10163 m), (in traditional tunneling method) and implementation of 208 concrete manholes.

10. Piping works for the wastewater network of Saa’dat Abad and Farahzad

  • Employer: Tehran Wastewater Company 
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: 1.551.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

  1. Polyethylene Piping Works inside reinforced concrete Pips with diameter of 1000 mm; in pipe jacking and tunneling methods, as per below detail:
  2. 315 mm x 184m Polyethylene Pipes inside steel casings with diameter of 1000 mm
  3. 500 mm x 167m Polyethylene Pipes inside steel casings with diameter of 1000 mm
  4. 600 mm x 45m Polyethylene Pipes inside steel casings with diameter of 1000 mm
  5. Pipe jacking works using steel pipes with nominal diameter of 1000 mm for a length of 352m
  6. Implementation of 11 concrete manholes 

11. Piping works for the wastewater network of Sadr Highway 

  • Employer: Tehran Wastewater Company 
  • Consultant: Mahab Ghodss Consulting Engineers Co.
  • Contract price: 795.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%
  • Brief description:

  1. Steel Pipe jacking works with nominal diameter of 1000 mm for length of 36 m
  2. Double Wall Polyethylene pipeline installation with diameter of 250 mm in traditional tunneling method and with length of 151 m.
  3. Single Wall Polyethylene pipeline installation with diameter of 300 mm in traditional tunneling method and with length of 46 m.
  4. Double Wall Polyethylene pipeline installation with diameter of 400 mm in traditional tunneling method and with length of 190 m.
  5. Double Wall Polyethylene pipeline installation with diameter of 600 mm in traditional tunneling method and with length of 7 m.
  6. Reinforced concreted pipe jacking with diameter of 1000 mm for a length of 55 m
  7. Construction of 17 manholes 

12. Piping works for the wastewater network of Gheytariyeh- Dowlat , Area 3N-2

  • Employer: Tehran Wastewater Company
  • Consultant: Rayab Consulting Engineers Co.
  • Contract price: 140.000.000 Rials
  • Project status: FAC
  • Progress: 100%
  • Brief description:
Polyethylene Piping works with diameter of 300m and length of 49m in traditional tunneling method.

13. Piping works for the wastewater network of Nazar Abad Area RN2

  • Employer: Wastewater Company, West of Tehran 
  • Consultant: Wastewater Company, West of Tehran 
  • Contract price: 183.000.000 Rials 
  • Project status: FAC 
  • Progress: 100%

Brief description:

  1. Steel Pipe jacking works with nominal diameter of 1000 mm for length of 36 m at intersection site located between the main water transmission lines (Nazarabad) and Tehran-Tabriz railway 
  2. Installation of 36 m of steel pipes with a length of 600 mm inside a steel casing with diameter of 1000 mm



14. Wastewater collection networks installation Of Rasht in zone 2,14,15,20 and LSP station

  • Employer: Guilan Water & Wastewater Company 
  • Consultant: Iranab Consulting Engineers Co.
  • Contract price: 32.228.000.000 Rials 
  • Project status: FAC is in process
  • Progress: 85%
  • Brief description:

  1. Polyethylene piping works for a wastewater pipeline with diameter of 400-315-250-200-160 mm and 1260-3060-1200-45780-4150 m (Total 55450m) of length, in traditional tunneling method 
  2. Construction of 1700 concrete manholes 
  3. GRP pipe installation with diameter of 500mm and 100m of length.