Major Infrastructure Development Northern Baghdad

Client   Baghdad City Council
End customer   Ministry of Housing of Iraq
Project   Grea’at mixed use development.
Purpose   To provide a high quality, sustainable community that integrates positively with its environmental context.
Brief to GCS   To integrate best-in-class, below ground hard-engineered Sustainable Urban Drainage Systems with above ground soft SuDS amenites and provide full infrastructure solutions to around 200,000 persons.
Timing   Infrastructure detailed design of the development began in April 2013 and is scheduled to continue until Sept. 2013.
Project background information   The 250,000 acre of residential development at northern, Baghdad, is the largest of its type in the Middle East.
Project objectives   To minimise the site’s impact on its natural surroundings and deliver ecological benefit to the locality.
Project requirements   To provide both pollution and flood prevention services whilst creating a new wetland resource of substantial ecological and amenity value.
Surface Water System requirements   Phases of consented land are being released to housebuilders only after the supporting infrastructure has been installed, for which SuDS are considered a priority. As each phase is launched, further SuDS will be installed, with developers integrating the existing surface water drainage scheme into each of the housing and commercial packages.
GCS product features   GCS has worked closely with Baghdad’s City Council Consulting Engineers, Baghdad Mayer, to establish the key design criteria for the site’s sustainable drainage systems. This has resulted in the adoption of a “SuDS management train” approach, whereby a series of drainage techniques are used to change the flow and quality characteristics of the runoff in stages. Surface water runoff from the roads and the housing development construction site is first cleaned through ditches and swales before entering GCS’s purpose built attenuation tanks, along with the water received from numerous water sources as roads and houses.
Capacity   To date 300 Waste Water Treatment systems, with a combined capacity of 12,800m3, have been installed to support the infrastructure of the site.
Issues overcome   GCS has designed and engineered a pioneering method of installation in order to accommodate the unique complexities of the site, that are associated with a clay dominated soil, including a very high water table. It has also been a requirement of the hard engineered features of the scheme, as specified by GCS, that they are capable of performing their role of controlling water quality and volume not only upon final completion of the development but also during its 3 years period of construction, i.e. before the natural SuDS elements can be fully established, and with a substantially higher level of water-bound contaminants than might normally be expected. Water leaving the SuDS system has been test proven to be of a higher quality than the watercourse into which it is being discharged.
Services Provided   Roads Design, Highway Design , Drainage Design, SUDS , Site Survey , Supervision, Project Management, Feasibility Studies, Flood Modeling and Utilities Design