SCL_Material_Standard_7020.05.pdf

This is a Seattle City Light Material Standard document (Standard Number 7020.05) detailing specifications for Schedule 80 PVC Conduit and Fittings. The standard covers requirements for extruded rigid polyvinyl chloride (PVC) conduit used to construct smooth raceways for cable pulling in various applications, applicable for aboveground and underground installations both indoors and outdoors. The document provides comprehensive technical specifications including performance requirements, dimensional details, conduit and elbow characteristics, testing standards, and approved manufacturers.

The material standard specifies detailed technical requirements for PVC conduit, including color (medium to dark gray), dimensional tolerances, certification by Nationally Recognized Testing Laboratories (NRTLs), and performance criteria aligned with UL 651 standards. Approved manufacturers include Cantex, Cresline NW, Heritage Plastics, IPEX, JM Eagle, Prime Conduit, Ridgeline Pipe, and NAPCO, among others. The standard covers conduit sizes from 1-1/2 inches to 6 inches, with specific requirements for straight cuts, bell ends, and elbow configurations, and mandates specific marking requirements for each conduit section including trade size, manufacturer information, and manufacturing date.