Page 197 - Buried Pipe Design
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Design of Gravity Flow Pipes  171





                                  B           B
                                    A           A

           Vertical Soil Pressure, lb/in 2









                                               Vertical Deflection
                                               Horizontal Deflection






                                      Pipe Deflection, %
         Figure 3.52 Vertical soil pressure versus pipe deflection. (A) Soil box data 90 percent rel-
         ative compaction, silty sand; (B) FEA with compaction simulation.







                                                         Thrust Strain
                                                        Bending Strain

                             B


           m in/in                             A

           Strain,          B



             –
                                  A
             –

                                     Position on Pipe, degrees
         Figure 3.53 Pipe strain as function of circumferential position, conditions as in Fig. 3.52.
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