Errata toAWWA Manual M9, Concrete Pressure Pipe, 3rd ed.(July 2013)1. On pages 130, 142, and 152, the equation Eq 9-5B should read:bracketleft.alt2 parenleft.alt4 parenright.alt4parenleft.alt4 parenright.alt4bracketright.alt2We= DoH12+ 1 4D2o122 22. On page 132, (Do= pipe outside diameter, ft) should read:Do= pipe outside diameter, in.3. On page 136, Table 9-1, soil friction ( = 0.5) in the Soil Properties column for Soil Type IV should read: = 0.4
