Structural Design on Ductile Iron Pipeby Deon T. Fowles, Ductile Iron Pipe Research Assoc, Birmingham, United States,
Abstract: The thickness class designation for Ductile Iron pipe has been changed to a pressure class designation in the 1991 revision of the C150/A21.50 ANSI standard. However, the same conservative design method for Ductile Iron pipe that has been used since the 1976 standard still applies as neither the design requirements nor the manufacturing requirements have changed. Minimum explicit safety factors are set, but actual total field service safety factors far exceed those values. The author provides a comprehensive discussion of the design procedure for Ductile Iron pipe.
Subject Headings: Structural design | Pipelines | Cast iron | Thickness | Pressure pipes | Standards and codes | Safety
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