17 of 49 Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 05: Earth Works, Pipe Works and Ground Improvement  5.3.5.2 Concrete pipes  General  Unreinforced and reinforced concrete pipes and fittings with flexible joints shall comply with TS 821  EN 1916. The pipes shall be reinforced to stand the load during installation as well as in the permanent  installation. Concrete pipes shall be sealed with standard rubber ring gaskets. Prior to use the jointing  rings shall be stores in a cool place, protected from direct sunlight and frost.  Pipes used for wastewater pipelines shall be steam cured pipes with integrated gasket type.  Pipes used for stormwater pipelines shall be steam cured with separate gasket type.  Pipes shall be subject to rejection on account of failure to meet any of the testing requirements. Pipe  sections also may by rejected if found to contain cracks, damaged ends and other defects due to faulty  manufacture, handling, transporting or placing.  For pipe diameters of 200 mm to 400 mm, connections to the wastewater pipe can only be performed  with single branch fittings produced in a factory. For pipe diameters of 500 mm and greater, saddles  may be used but only saddles using direct drilling in the concrete pipe.  Pipe diameter, mm  (Pipe with bell and integrated gasket) Minimum compressive strength, kN/m (Force applied on crest) 200 mm concrete  45  300 mm. concrete  48  400 mm. concrete  54  500 mm. concrete  60  600 mm. concrete/reinforced concrete 65  800 mm. reinforced concrete 72  1000 mm. reinforced concrete 80  1200-3500 mm. reinforced concrete According to TS-821 EN 1916 Diameter, mm  Minimum pipe length, m  600 and smaller 1.25  700 - 1000 and larger  2.00  Pipe Length, joints and reinforcement  Standard pipe lengths shall not be shorter than the values specified below (excluding special and short  pieces).  Every concrete and reinforced concrete pipe joint shall be designed to withstand a load applied on  joint, load being equal to the gasket pressure plus 60,000N per every 1 m of internal diameter of the  pipe.  Spiral reinforcement shall be of totally circular type. Ellipsoid or partial circular reinforcement shall  not be accepted. Longitudinal reinforcement shall not be less than 0.2% of the pipe cross sectional ar- ea. Longitudinal reinforcement shall be placed around the pipe in a uniform spacing.  5_Vol3_d4.3_Section 5 Earth and pipe works_en_GIR_rev6.docx 