Page 156 - Reliability and Maintainability of In service Pipelines

Study References Max Dev. St. Mean Min (2004) 276 EPB 0.7 0.1 0.45 0.35 (1965) BS78-2 260 14.28 254 240 (1965) BS78-2 0.7 16 (2004) al. et Sadiq 0.04 0.235 (2004) al. et Sadiq 0.20 1.32 (2005) C600, AWWA 125 625 (1965) BS78-2 15,000 105,000 (2004) al. et Sadiq 0.02
Case

the Units MPa MPa N/mm 3
in mm mm mm N mm
Used

Variables corrosion Internal corrosion External corrosion Internal corrosion External

Random coefficient pipe of

Basic Pressure moment coefficient ditch elasticity coefficient coefficient length weight constant constant

of diameter thickness of of factor load load effective
Values Variable Internal Inner Wall Bending Calculation Width Modulus Defection Impact Surface Wheel Pipe Unit Soil Multiplying Exponential

5.6
TABLE Symbol P D d K m C d B d E P K d I c C t F A γ k n