Page 199 - Buried Pipe Design
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Design of Gravity Flow Pipes 173
B
B
A A
Vertical Soil Pressure, lb/in 2
Vertical Deflection
Horizontal Deflection
Pipe Deflection, %
Figure 3.54 Vertical soil pressure versus pipe deflection. (A) Soil box data, 90 percent rel-
ative compaction, silty sand, and poor haunch support; (B) FEA, no compaction simula-
tion, and poor haunch support.
B
m in/in B
Strain, – A
A
Thrust Strain
–
Bending Strain
–
Position on Pipe, degrees
Figure 3.55 Pipe strain as function of circumferential position, conditions as in Fig. 3.54.
