A deflection mandrel is not used in clay pipe (or in any rigid conduit) as it does not deform or deflect after it is fired in the kiln. Testing for VCP lines is most commonly conducted using the Low-Pressure Air Test.
What is the best way to get updated information on proper installation techniques and bedding classes?
If this is your first time to install VCP or if it’s been a few years, we strongly recommend the Installation & Inspection workshop for your inspectors and contractor’s crew.
Are there “handling guidelines” for VCP on a job site?
Common handling guidelines for all pipe materials generally include: storing the pipe so that the joint-ends are kept out of the dirt and supported from pavement, pipe should be inspected at the time of delivery and again immediately prior to installation, any pipe rejected should not be marked or defaced in any manner. There is no need to protect VCP from sunlight or heat.
How can you prevent root intrusion in any pipeline?
Aggressive cleaning as part of regularly planned pipeline maintenance is the most effective way to prevent root intrusion in any pipeline. VCP is the only pipe material that allows for chemical, mechanical and hydro-jetting cleaning methods. See the Allowable Cleaning Methods in Various Pipe Materials chart for a full comparison.
What are the key things an inspector should be aware of on a VCP project?