Page 257 - Buried Pipe Design

Initial Internal pressure, lb/in 2 deflection, 125 100 75 50 25 0 percent Strain 1,649 2,058 3,312 3,776 3,373 4,533 2.90 7,318 8,222 8,074 10,131 14,601 11,094 7.90 6,759 8,456 8,500 9,883 10,356 9,916 10.20 1,239 1,367 1,929 2,355 3,376 3,839 3.00 4,052 4,769 5,

Cover, ft 10.00 10.00 10.00 3.00 3.00 6.50 5.58 6.50 6.50 5.50 6.50 10.00 10.00 10.00 3.00 3.00 6.50 5.50 6.50 6.50 5.50 6.50

Pipe stiffness, lb/in 2 13 92 92 5 13 35 92 35 35 92 92 13 92 13 5 13 35 92 35 35 92 92

Poor Haunch Proctor density, percent 90 85 80 80 80 80 80 80 80 80 85 90 85 80 80 80 80 80 80 80 80 85

TABLE 4.10 Test no. PH1 PH2 PH3 PH4 PH5 PH6 PH7 PH8 PH9 PH10 PH11 PH1 PH2 PH3 PH4 PH5 PH6 PH7 PH8 PH9 PH10 PH11

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