OTHER RELEVANT PPI TRs/ TNs

• TN-7 - Nature of Hydrostatic Stress Rupture Curves
• TR-9 - Recommended Design Factors and Design Coefficients for Thermoplastic Pressure Pipe - Unavailable, currently under revision.
• TN-16 - Rate Process Method for Projecting Performance of Polyethylene Piping Components
• TN-23 - Guidelines for Establishing the Pressure Rating for Multilayer and Coextruded Plastic Pipes (this has been archived)
• TN-28 - Guide to Differences in Pressure Rating PE Water Pipe between the ASTM and ISO Methods