Environmental Engineering Reference
In-Depth Information
Fig. 8.16 The service cost of
this asset is minimized if it is
renewed approximately every
20 - 30 years
Fig. 8.17 Iterative
adjustment reveals that the
precise solution is 24.4 years
exception of the soil type and copper pipe variables were signi
cant. Upon removal
of the insigni
cant variables, Eq. 8.18 for cost of failure was estimated:
S ðÞ¼ 3661
:
8 þ 230
49
4 : 414
:
Depth i þ 165
:
7
Sizei i 296
01
4 : 556
:
ACAGE i
ð
Þ
ð
4053
Þ
ð
Þ
þ 13319
4 : 493
AC i þ 87
05
3 : 124
:
Age i
ð 8 : 18 Þ
ð
Þ
ð
Þ
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