Design-PE

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Design.1 PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems d e s i g n contents Pipe Selection 3 Pipe Dimensions 4 Allowable Operating Pressure 5 Temperature Influences 7 Service Lifetimes 7 Pipe Design for Variable Operating Conditions 8 E Modulus 10 Selection of Wall Thickness for Special Applications 10 Hydraulic Design 11 Flow Chart Worked Examples 13 Part Full Flow 15 Resistanc
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  Design.1 PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems d e s i g n contents Pipe Selection 3 Pipe Dimensions 4 Allowable Operating Pressure 5 Temperature Influences 7 Service Lifetimes 7 Pipe Design for Variable Operating Conditions 8 E Modulus 10 Selection of Wall Thickness for Special Applications 10 Hydraulic Design 11 Flow Chart Worked Examples 13 Part Full Flow 15 Resistance Coefficients 16 Flow Charts 17-26 Surge and Fatigue 27 Celerity 28 Slurry Flow 29 Pipe Wear 30 Maintenance and Operation 31 Fittings 31 Pneumatic Flow 32 System Design Guidelines for the Selection of Vinidexair Compressed Air Pipelines 33 Expansion And Contraction 35 External Pressure Resistance 36 Trench Design 37 Allowable Bending Radius 38 Deflection Questionnaire – FAX BACK 39 Deflection Questionnaire – Vinidex locations 40 Thrust Block Supports 41 Electrical Conductivity 43 Vibration 43 Heat Sources 43  PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems Design.2 d e s i g n Limitation of Liability This manual has been compiled by Vinidex PtyLimited (“the Company”) to promote betterunderstanding of the technical aspects of theCompany’s products to assist users in obtainingfrom them the best possible performance.The manual is supplied subject toacknowledgement of the following conditions:ãThe manual is protected by Copyright and maynot be copied or reproduced in any form or byany means in whole or in part without priorconsent in writing by the Company.ãProduct specifications, usage data and advisoryinformation may change from time to time withadvances in research and field experience. TheCompany reserves the right to make suchchanges at any time without notice.ãCorrect usage of the Company’s productsinvolves engineering judgements which cannotbe properly made without full knowledge of allthe conditions pertaining to each specificinstallation. The Company expressly disclaimsall and any liability to any person whethersupplied with this publication or not in respectof anything and of the consequences of anythingdone or omitted to be done by any such personin reliance whether whole or partial upon thewhole or any part of the contents of thispublication.ãNo offer to trade, nor any conditions of trading,are expressed or implied by the issue of contentof this manual. Nothing herein shall override theCompany’s Conditions of Sale, which may beobtained from the Registered Office or any SalesOffice of the Company.ãThis manual is and shall remain the property ofthe Company, and shall be surrendered ondemand to the Company.ãInformation supplied in this manual does notoverride a job specification, where such conflictarises, consult the authority supervising the job.©Copyright Vinidex Pty LimitedABN 42 000 664 942  Design.3 PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems PE Pipe Systems d e s i g n Pipe Selection Vinidex PE pipes are available in acomprehensive range of sizes up to1000mm diameter, and pressure classesin accordance with the requirements ofAS/NZS 4130 - Polyethylene (PE) pipesfor pressure applications.Additional sizes and pressure classes toAS/NZS 4130 requirements are addedfrom time to time and subject tominimum quantity requirements, pipesmade to specific sizes, lengths orpressure classes are available.The Standard AS/NZS 4130 includes arange of PE material designations basedon the Minimum Required Stress (MRS),and classified as PE63, PE80, andPE100. When pipes are made to thesame dimensions, but from differentrated PE materials, then the pipes willhave different pressure ratings.The relationship between the dimensionsof the pipes, the PE materialclassification and the working pressurerating are as shown in Table 4.1.For simplicity, the dimensions of the pipehave been referred in terms of theStandard Dimension Ratio (SDR) where:Outside DiameterSDR =Wall Thickness Table 4.1 Comparison of SDR & Pressure Ratings (PN) SDR413326211713.61197.4PE80PN3.2PN4-PN6.3PN8PN10PN12.5PN16PN20PE100PN4-PN6.3PN8PN10PN12.5PN16PN20PN25Notes: PE Long term rupture stress at 20 ° C (MPa x 10) to which a minimum design factoris applied to obtain the 20 ° C hydrostatic design hoop stress. PN Pipe pressure rating at 20 ° C (MPa x10). SDR Nominal ratio of outside diameter to wall thickness.
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