1. ASME boiler and pressure vessel code section VIII division 1. (1980). Amer. Soc. of Mech. Engineers New York N.Y.
2. AWWA standard for steel water pipe 6 inches and larger. AWWA C200‐86 (1986). Amer. Water Works Assoc. Denver Colo.
3. Beedle L. S. (1958). Plastic design of steel frames . John Wiley & Sons New York N.Y.
4. Failures of 108‐Inch Steel Pipe Water Main
5. Roark R. J. and Young W. C. (1975). Formulas for stress and strain . McGraw‐Hill Book Co. New York N.Y.