FACTORS OF SAFETY IN THE DESIGN OF BURIED PIPELINES

THE FACTS AND CIRCUMSTANCES ARE EXAMINED THAT SHOULD BE CONSIDERED IN DETERMINING THE FACTOR OF SAFETY TO BE USED IN THE DESIGN OF SEVERAL TYPES OF BURIED PIPELINES. FACTORS OF SAFETY BASED ON YIELD STRENGTH OR ON ULTIMATE STRENGTH OF THE PIPE ARE DEFINED AND CONSIDERED FOR REINFORCED CONCRETE PIPE, NONREINFORCED RIGID PIPES, AND FLEXIBLE METAL PIPES. RECOMMENDED FACTORS OF SAFETY VARY FROM 1.0 TO 1.5, DEPENDING ON THE CIRCUMSTANCES OF CONSTRUCTION, I.E., THE TYPE OF PIPE, BEDDING, KNOWLEDGE OF THE CHARACTER OF THE SOIL INVOLVED, PERMISSIBLE DEFLECTION, AND THE TYPE OF STRENGTH TEST USED ON THE PIPE. /AUTHOR/