Go to
www.nema.org and download the following for free:
Expansion Joints for PVC Rigid Nonmetallic Conduit NEMA Standards Expansion Joints for PVC Rigid Nonmetallic Conduit
Status: Active
[No Document Number]
This guide provides information about when and how expansion joints are used. Discusses that fluctuations in temperature have a greater effect upon polyvinyl chloride (PVC) than more traditional construction materials, such as aluminum and steel.
Thermal expansion and contraction have significant effects on long, straight runs of conduit; therefore, expansion joints are used to accommodate changes in length. This prevents potentially harmful stresses in the conduit itself or in any supporting structures.
Electronic Copy
$0.00 [DOWNLOAD]