Abu Dhabi:Sewer Rehabilitation – Trunk Line “C”
Disciplines
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Hydraulic Engineering
-
Sanitation
Companies
DC Abu Dhabi
Client
Abu Dhabi Municipality
Duration
From 2002 to 2004
Project Activities
- Revision of design
- Approval of method statements for rehabilitation techniques, over-pumping, cleaning and inspection
- Site supervision and handing over to the client
Contact
Abu Dhabi (Headquaters)
Salam Street
Lulu Centre, 5th, 10th and 15th Floor
P.O. Box 26417
Abu Dhabi
United Arab Emirates
Lulu Centre, 5th, 10th and 15th Floor
P.O. Box 26417
Abu Dhabi
United Arab Emirates
Phone: +971 2 6721923
Fax: +971 2 6720809
E-Mail: info@dorsch.com
Description
Dorsch Consult is responsible for management and supervision of sewer rehabilitation works in the city centre of Abu Dhabi. The up to 20 years old trunk sewers and manholes in Abu Dhabi are mainly constructed in GRP. Previous inspection surveys have shown that deflection has partly reached a non permissible extend as well as conditions like open and displaced joints.
The scope includes:
- Rehabilitation of 4.7 km trunk sewers ranging from DN 400 - 1600, incl. 62 manholes
- Construction of new structures on trunk sewer lines
- Cleaning of pumping station
- Cleaning and inspection of additional 27.5 km subsidiary lines from DN 350 - DN 1000, assessment of the inspection survey, evaluation of possible rehabilitation methods
- Construction of 9 emergency sewer by pass ducts
Execution:
- Rehabilitation of DN 400 - 600 by Close Fit technique(cured in place / U-liner)
- Rehabilitation of DN 700 - 1600 by Spiral Woundtechnique (RibLoc)
- Construction of emergency ducts by microtunnellingtechnique with concrete encased GRP