15 of 49 Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 05: Earth Works, Pipe Works and Ground Improvement   Storm water drainage;   Groundwater drainage (if required);   Aeration; and  Gas.  5.3.2 Standards and rules  The following standards shall apply for the pipes:   TS 821 EN 1916 Concrete pipes and fittings, unreinforced, steel fibre and reinforced  TS 11565 EN 969 Ductile iron pipes, fitting, accessories and their joints for gas pipelines- Requirements and test methods  TS EN 545 Ductile iron pipes, fittings, accessories and their joints for water pipelines - Re- quirements and test methods  TS EN 598 Ductile iron pipes, fittings, accessories and their joints for sewerage application- Requirements and test methods  TS EN 10216 Seamless steel tubes for pressure purposes-Technical delivery conditions   TS EN 10217 Welded steel tubes for pressure purposes-Technical delivery conditions   TS EN 10246 Non-destructive testing of steel tubes   TS 9937 Polypropylene pipes general purpose   ISO 2531 Ductile iron pipes, fittings, accessories and their joints for water or gas applications  Wastewater systems for the new structures and buildings shall be connected to the inlet chamber of the  wastewater treatment plant.  5.3.3.2 Drinking water  5.3.3 Functional requirements for pipe systems  5.3.3.1 Wastewater system  5.3.3.3 Fire fighting water  5.3.3.4 Surface water drainage  Adequate drinking water (both in terms of the quantity and pressure) shall be available on site.  The wastewater treatment plant site shall be covered with fire hydrants in a number and location that  fulfils the requirements according to Turkish norms and standards.  The wastewater treatment plant site shall be covered with a surface water drainage system that secures  the area against flooding caused by rainfall and from erosion caused by surface flows. The system may  be with surface drainage supplemented with a pipe system that ensures that surface water is discharged  to the adjacent water course.  An irrigation system for the entire plant area shall be established as part of the Contract. Service water  shall be available at several tap locations.  5.3.3.5 Irrigation system  5_Vol3_d4.3_Section 5 Earth and pipe works_en_GIR_rev6.docx 