A Qualitative Approach to Determine the Areas of Highest Inflow and Infiltration in Underground Infrastructure for Urban Area

Table 4

Assigned value for pipe age.

Pipe age (years)	67	<67 ≤ 96	<96 ≤ 106	<106 ≤ 112	<112 ≤ 119	<119 ≤ 134
Assigned values	5	6	7	8	9	10