Provides design charts for the flow of liquid through pipes and fittings based upon surface roughness, diameter, velocity and hydraulic gradient. The resistance coefficients of fittings are also included.RECONFIRMATION NOTICETechnical Committee PL-021 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 27 April 2017.The following are represented on Technical Committee PL-021:Association of Accredited Certification BodiesAustralian Building Codes BoardChemistry AustraliaEnergy Networks AustraliaEngineers AustraliaLocal Government New ZealandNew Zealand Employers and Manufacturers Association (Central)Plastics Industry Pipe Association of AustraliaPlastics New ZealandWater New ZealandWater Services Association of Australia