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Table 2

Summary of PRI and NRI solutions for WDS-I in the cost range of ≤$8.5 million

Cost rangeResilience metricPump size# of solutionsAvg. cost ($)Norm. mean pipe size (mm)Avg. std. dev. of pipe diameters (mm)
(a) $0–6.8 M NRI 4 57 5.74 M 280.1 159.7 
5 78 6.3 M 316.3 142.7 
6 19 6.64 M 317.0 124.3 
PRI 4 82 6.21 M 313.4 186.3 
5 13 6.53 M 324.9 181.0 
(b) $6.8–7.4 M NRI 6 13 6.99 M 344.2 144.7 
7 27 7.14 M 339.9 137.3 
8 5 7.16 M 329.7 118.8 
PRI 4 13 6.92vM 365.9 196.0 
5 20 7.16 M 373.4 195.6 
(c) $7.4–8.5 M NRI 7 10 7.54 M 369.9 147.1 
8 20 7.72 M 369.9 148.7 
9 23 7.98 M 369.9 137.9 
10 14 8.35 M 380.7 139.5 
PRI 5 59 7.74 M 425.0 159.0 
6 30 8.28 M 440.2 138.4 
Cost rangeResilience metricPump size# of solutionsAvg. cost ($)Norm. mean pipe size (mm)Avg. std. dev. of pipe diameters (mm)
(a) $0–6.8 M NRI 4 57 5.74 M 280.1 159.7 
5 78 6.3 M 316.3 142.7 
6 19 6.64 M 317.0 124.3 
PRI 4 82 6.21 M 313.4 186.3 
5 13 6.53 M 324.9 181.0 
(b) $6.8–7.4 M NRI 6 13 6.99 M 344.2 144.7 
7 27 7.14 M 339.9 137.3 
8 5 7.16 M 329.7 118.8 
PRI 4 13 6.92vM 365.9 196.0 
5 20 7.16 M 373.4 195.6 
(c) $7.4–8.5 M NRI 7 10 7.54 M 369.9 147.1 
8 20 7.72 M 369.9 148.7 
9 23 7.98 M 369.9 137.9 
10 14 8.35 M 380.7 139.5 
PRI 5 59 7.74 M 425.0 159.0 
6 30 8.28 M 440.2 138.4 
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