1. American Water Works Association (AWWA) (2008) C150-08 Thickness Design of Ductile-Iron Pipe Denver CO.
2. American Water Works Association (AWWA) (2007) C200-05 Steel Water Pipe-6 In. (150 mm) and Larger Denver CO.
3. American Water Works Association (AWWA) (2004) Manual of Water Supply Practices-M11 Steel Pipe-A Guide for Design and Installation Fourth Edition Denver CO.
4. American Water Works Association (AWWA) (2009) Manual of Water Supply Practices-M41 Ductile-Iron Pipe and Fittings Third Edition Denver CO.
5. ASTM (2010) A247 - 10 Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings West Conshohocken PA.