Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...

4.2.12 Buckling Test. A steel mechanical tube was prepared for the test to act as a host pipe for the
liner. The tube was 2 ft long and machined to accommodate the slight ovality of the liner (the tube
thickness was reduced 1/16 in.). Two 3/8 in. threaded holes were made on the opposite sides of the
mechanical tube. Quick connectors were fixed to the pipe through the holes to allow attaching the
pressure system (see Figure 4-14).
The liner was inserted into the tube by manually pushing it into place. IPEX TM pipe joint lubricant was
applied to the inside of the tube to ease the sliding of the liner. The liner was beveled on both ends using
an air operated disk sander, and finished flush with the end of the pipe (Figure 4-15).
Figure 4-14. Machined Mechanical Tube (Left) and a Threaded Hole on the Tube (Right)
Figure 4-15. Liner Inside the Pipe and Beveling of the Liner
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Threaded Hole