Published: Sept. 27, 2019

  • Full Project Title: Seismic Evaluation of Hazard-Resistant Pipelines: Axial Testing of PVC, PVCO, and iPVC Pipe with Coupling 
  • Year: 2019
  • Industry Partners: East Bay Municipal Utility Department (EBMUD)
  • CIEST Personnel: Cory Ihnotic, David Kyle Anderson, Jessica Ramos, David Balcells, Brice Lucero, John Hindman, and co.
  • Primary Investigator: Prof. Brad Wham
  • Summary: The first in a series of testing programs at CU Boulder CIEST investigating performance of critical lifeline systems under extreme loading conditions. This study focuses on the response of various thermoplastic pipe materials and a coupling connection under externally applied axial and lateral loading.  Internally pressurized, 6 in. (150 mm) diameter specimens were tested to failure under various loading scenarios including axial tension, compression, and cyclic loading as well as transverse 4-pt bending. This project initiated the development of self-reacting test frame capable of applying dynamic tension and/or compressive loading in excess of 100,000 lbs (445 kN) to linear structures up to 12 ft (3.66 m) long. CIEST’s 1,000,000 lb (4450 kN) four-post load frame was employed to apply lateral loading.  
  • View the full report here.

Appreciation is extended to collaborators David Katzev and Timothy Harris of EBMUD for their intellectual and practical contributions to the project. 


pipe group shotload_frame_pic  solidworks_axial loadframe  bending_prefour-point bending pipe testtest frame