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Table 3

Summary of PRI and NRI solutions for WDS-II in the cost range of ≤$5 million

Cost rangeResilience metric# of solutionsAvg. cost ($)Norm. mean pipe size (mm)Avg. std. dev. of pipe sizes (mm)
(a) $0–1.7 M NRI 20 1.6 M 249.6 221.5 
PRI 34 1.59 M 246.1 229.7 
(b) $1.7–2.4 M NRI 60 ∼2 M 309.8 230.4 
PRI 92 ∼2 M 307.3 250.5 
(c) $2.4–5 M NRI 99 3.54 M 466.9 296.0 
PRI 215 3.51 M 479.4 270.5 
Cost rangeResilience metric# of solutionsAvg. cost ($)Norm. mean pipe size (mm)Avg. std. dev. of pipe sizes (mm)
(a) $0–1.7 M NRI 20 1.6 M 249.6 221.5 
PRI 34 1.59 M 246.1 229.7 
(b) $1.7–2.4 M NRI 60 ∼2 M 309.8 230.4 
PRI 92 ∼2 M 307.3 250.5 
(c) $2.4–5 M NRI 99 3.54 M 466.9 296.0 
PRI 215 3.51 M 479.4 270.5 
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