Page 332 - Buried Pipe Design
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Steel and Ductile Iron Flexible Pipe Products 303
Figure 6.10 Test cell in operation—pistons of cylinders extended.
testing. The soil gradation curve and the Proctor density curve for this
soil are given in Figs. 6.11 and 6.12, respectively.
Pipe material properties are as follows:
The Steel Sheet
Modulus, Yield, lb/in 2 Tensile strength, lb/in 2
Gauge Thickness lb/in 2 Minimum Actual Minimum Actual
16 0.064 in 29.5 10 6 33,000 40,800– 45,000 51,100–
44,000 53,500
Sectional properties of the pipe are as follows:
2
Area per length: A 0.364 in /ft
4
Moment of inertia: I 2.390 in /ft 10 3
Radius of gyration: r 0.281 in
