When leak features are placed and associated with their corresponding Gas Main features, statistical leak trends for system-wide or individual element/segments can be computed and analyzed. Two main statistics will be computed by the leak-analysis tool per pipe feature:

1. Number of leaks
2. Leaks per year per distance, computed as number of leaks on pipe x divided by the leak data range in years divided by the length of pipe x according to the model's units

With leak statistics computed on each individual Gas Main feature, three different leak analysis options become available:

1. Generate a Crosstab Report, relating any two properties with computed leak statistics. For example, the user can prepare a two dimensional table showing breaks rate with the rows corresponding to material and the columns corresponding to year laid.
2. Generate a Tabular Report, relating year-installed for pipes against computed leak statistics. For example, the user can prepare a table showing break rate in breaks per kilometer per year for each diameter pipe in the system (selection set or fence).
3. Generate a new layer, by Exporting Leak Results Features to a new Map Manager layer, and use Bentley Map's analytical tools for further reporting and/or visualization.
   This last option offers the choice between generating results features for:

   • Individual pipe elements, or
   • Aggregated to isolatable elements - pipes or series of pipes isolated from the rest of the system by isolation valves.