Transcription of WATER MAIN CONSTRUCTION TECHNIQUES
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WATER MAIN CONSTRUCTION TECHNIQUES
WATER MAINCONSTRUCTION TECHNIQUESDEPARTMENT OF PUBLIC WORKSWATER & WASTEWATER DIVISIONO verview WATER Main - Materials Specifications Installation Future?DEPARTMENT OF PUBLIC WORKSWATER & WASTEWATER DIVISIONW ater Main MaterialsMaterial TypesThere are various material types used for WATER mains, these include: ductile iron Pipe Polyvinyl Chloride (PVC) Concrete Steel Cylinder PolyethyleneDEPARTMENT OF PUBLIC WORKS WATER & WASTEWATER DIVISIONW ater Main SpecificationsSpecificationsProvide information on approved materials, installation methods and typical drawings. Department of Municipal and Intergovernmental Affairs Municipal WATER , Sewer and Roads Master CONSTRUCTION Specification Book, Section 02713 City of St. John s Specification Book, Section 230 DEPARTMENT OF PUBLIC WORKSWATER & WASTEWATER DIVISIONW ater Main SpecificationsSpecifications - Examples Approved Pipe MaterialsoDuctile iron , PVC, Conc. Steel Cylinder Pressure Classes of PipeoDI Pipe Class = 350, 250, 200oPVC Pipe = DR 14, 18, 21 ValvesoOpening Direction, Operating Nut Service PipeoApproved Materials and DiameterDEPARTMENT OF PUBLIC WORKSWATER & WASTEWATER DIVISIONW ater Main InstallationPipe Trench Excavated to depth specified on drawings, minimum 2 m cover.
Service Connections – Ductile Iron • Direct tapping is permitted up to 25 mm diameter. • Service greater than 25 mm diameter require service saddle. • Service connections should be a minimum of 1 m from adjacent service, pipe bell or fitting. • Direct tap completed using drill and tap bit.
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