PVC C905 Large-Diameter Transmission Pipe

1 PVC C905 Large-Diameter Transmission PipePVC C905 Large-Diameter Transmission Under Pressure While Cutting Field Installation CostsSuperiorPerformance Under Pressure While Cutting Field Installation Costs2 PWPipe is the largest producer ofPVC pipe in western North Americaand our products are available from distributors throughout this geographic region. Our water worksproducts are distributed primarily inthe states West of the products include PVC andpolyethylene pipe and tubing for a variety of applications servicing thepotable water, well casing, sewer, turf, agriculture, plumbing, communications, and electrical markets. Our manufacturing facilities in Oregon, Washington, California, Utah, and Nebraska assure on-time C905 high pressure waterpipe combines superior materials withthe latest manufacturing products meet or exceed industry standards because of our rigorous quality-control supports the PVC pipe industry s efforts to maintain the highest design and manufacturingstandards.

2 We are members of theUni-Bell PVC pipe Association andAmerican Water Works Association(AWWA).Why more specifiers choose PWPipe C905 Large-Diameter pipe for water Transmission is immune to nearly all types of internal and external PVC is a non-conductor, it isnot affected by electrolysis. Nor is itsusceptible to alkaline or acid soilconditions. Since it never corrodes,cement liners, encasement bags, andpoly linings are unnecessary. Smoothinner walls prohibit bacteria build-up,pitting, and tuberculation. As a result,it provides trouble-free service of InstallationPWPipe Transmission pipe is muchlighter than rigid pipe materials, making handling and installation fasterand less expensive. Field-cutting,beveling, and assembly in the trenchare easy.

3 With 20-foot laying lengthsand cast iron sizes, you can use standard fittings, valves, and FlowsA Hazen-Williams flow coefficient ofC=150 means our Transmission pipeputs less burden on pumps, becausethere s less friction between movingwater and pipe walls. The result isgreatly reduced pumping and FlexibilityMade from 12454 PVC compound,this pipe is not affected by mostchemicals and is highly resistant toimpact and abrasion. The ability of PVC to bend withoutbreaking allows the joint and pipe assembly to compensate for minorearth movement, which can causeproblems in more rigid, non-PVC assemblies. Our integral bell gasketedjoint meets the strict dimensional requirements and demanding test criteria of ASTM D ControlPWPipe Transmission pipe meets or exceeds the exacting requirementsof AWWA C905.

4 Our listing with Underwriters Laboratories (UL) ensures that our pipe is manufacturedprecisely as specified. Extractantwater purity tests performed by independent test laboratories ensurethat our pipe meets the requirementsfor water purity as specified byANSI/NSF Standard 61. All PWPipe C905 products undergoadditional in-plant quality-assurancetests, including impact resistance,flattening, joint integrity, hydrostaticproof, and acetone Assembly Instructions1. Clean all debris from the bell end of thepipe. Check the gasketposition. Be sure it scompletely seated inthe groove, with noraised Lubricate the spigotend, using only thePWPipe recommendedlubricant supplied withthe Place the pipes instraight alignment. Assemble to the insertion line on thespigot but PWPipe s installation guide formore detailed psi DR 18165 psi DR 25 HydraulicsPWPipe Transmission pipe has an extremely smooth energy-efficientpipe wall.

5 The Hazen-Williams coefficient is C= Rating You have a choice of two pressureratings. Our conservative design theory allows you to use DR 25 (165 psi) or DR 18 (235 psi) which incorporate a safety factor of 2. Bypermitting variation of safety factorsand surge pressure allowances, youcan fine-tune the pipe design for your system. See AWWA C905 Section stresses that result from internalpressure and external load are notadditive in the design of a flexible PVC pipe . A maximum deflection of 5 percent is recommended for a design limit. Excessive Surge PressuresExcessive surge pressures should beprevented by eliminating the causativecondition (such as entrapped air) orproviding reliable automatic surge-pressure controls and operation at temperatures 80 F orhigher, multiply the pressure rating bythese derating factors:NominalAverageApproximate*Minimu mApproximatePipe SizeOutside DiameterInside DiameterWall ThicknessWeight(inches)(inches)(inches)( inches)(lbs/100 ft) *MinimumApproximatePipe SizeOutside DiameterInside DiameterWall ThicknessWeight(inches)(inches)(inches)( inches)(lbs/100 ft) *These figures allow for manufacturing Derating Factor80 rubber gasket provides a tight,flexible seal.

6 Gaskets meet requirements ofASTM F 477. Gasket drawn above supplied forreference purposes ends are suppliedfrom factory with is an integral partof the pipe lineFactors Affecting DesignMaterialPVC compound meets cell class12454 per ASTM D 1784 and is certified to ANSI/NSF Standard 61 for AWWA C905 and is UL SealIntegral bell pipe provided with factory-installed gaskets meeting requirements of ASTM F Joint AssemblyMeets requirements of ASTM D 20-Foot LengthsTotal OffsetNumber A of Joints(feet) Description Standard SpecificationsAll PWPipe plants conduct daily quality-assurance tests, as well aspipe and joint inspections. Testing isin strict accordance with ASTM specifications as referenced byAWWA the hydrostatic proof tests,each length of pipe is tested at twicethe pressure rating of the pipe for aminimum dwell of 5 AssuranceDue to the large diameter and thickwalls of AWWA C905 pipe , it is verydifficult to curve the barrel of the , slight changes in directionare best accomplished by axial deflection at the pipe joints.

7 A maximum of one degree of deflectionis allowed at each joint. The equivalent radius of curvature for 20-foot pipe lengths is 1150 feet. Forchanges in direction greater than onedegree per joint, fittings should PWPipe s Technical Bulletin Longitudinal Bending of PVC pipe for more BendingJOINT INTEGRITYHYDROSTATIC PROOF TESTL= pipe length, ft. = joint deflection = 1 degreeRb= radius of curvature, offset, RbA1A2A3A4 TrenchThe bottom must be stable, smooth,and free of frozen material, dirt clods,or stones. Use bell holes for easy assembly and uniform support. Remove large rocks to provide atleast 6 inches of clearance around the pipe and recommend at least 12 inches ofcover. Where frost is common, thepipe should be 6 inches deeper thanthe record frost of Mechanical Equipment toAssemble PipeFor some conditions, use of heavyequipment (such as a backhoebucket) may be necessary for assembly of Large-Diameter this equipment is used, extracare must be taken because the installer loses the feel of the assembly.

8 Conditions such as rolledgaskets or overinsertion could go unnoticed. For a list of precautions,refer to PWPipe s Installation Guide PVC Water pipe . EmbedmentInstall our Transmission pipe with proper bedding for uniform longitudinal support. Work backfillmaterials under the sides of the pipeto provide satisfactory the initial backfill to a minimumdepth of 6 inches above the and place embedment materialcarefully. Exercise proper compactionand bedding procedures to providesoil densities as specified by the design to AWWA Standard C605 forembedment requirements. Make sure your backfill procedures are in accordance with applicable BackfillAfter placement and compaction ofembedment materials, you can placethe remaining backfill materials by machine.

9 They should contain no large stones or rocks, frozen material, or debris. Exercise proper compaction procedures to provide required 3. Dimension Ratio vs. Pressure SurgeIn response to 1 fps instantaneous flow velocity changeTable 2. Estimated Soil Bearing CapacityTable 1. Thrust Developed per 100 psi PressureAWWA C905 PVC Pressure pipe ( ) nominal pipe SizeFitting 90 ElbowFitting 45 ElbowValves, Tees, Dead Ends(inches)(lbs force)(lbs force)(lbs force)1422,00012,00015,6001628,40015,400 20,1001835,80019,40025,3002043,80023,800 31,0002462,60033,80044,200 Allowable Bearing PressureSoil Type(psf)Muck, Peat, Clay500 Sand1,000 Sand and Gravel1,500 Sand and Gravel With Clay2,000 Sand and Gravel Cemented With Clay4,000 Hard Pan5,000 Dimension RatioPressure SurgeDR(psi) : Values are estimated for horizontal thrusts at depths of burial which exceed 2 : These values should be used only for estimating purposes.

10 Values for design should be deter-mined by an engineer familiar with site soil thrust restraint is necessaryfor all gasketed joint systems. The push on features of our joints provide many installation advantages,but without adequate thrust restraintthey can become push off problems. The large thrust forces present in water-distribution systems(see Table 1) require thrust restraintsdesigned to handle test and peak operating Thrust BlocksIf concrete thrust blocks are used, the size and type of thrust blockingmust be based on the load-bearingcapacity of the soil, pressure in thepipe, and diameter of the pipe . Table2 provides conservative estimates ofload-bearing values for various soiltypes. When soil conditions are notknown, samples should be tested todetermine soil RestraintsIf mechanical thrust restraint devices areused, they should be a type designedfor use with PVC pipe .