Seismic Performance Evaluation of Buried Sewage Collection Pipelines

Table 2

Hazus equations concerning the ratio of damage to a buried pipeline.

Type of pipe	The ratio of damage to a PGV pipe per kilometer	The ratio of damage to a PGD pipe per kilometer
Fragile	RR = 0.0001^∗ PGV2.25	RR = prob ^∗ PGD0.56
Flexible	RR = 0.3 ^∗ 0.0001 ^∗ PGV2.25	RR = 0.3 ^∗ prob ^∗ PGD0.56
PR is defined as the extent of damage to the pipe per kilometer
PGV (cm.s^−1)
PGD (inch)