The industry standard curves included in Info360 Asset's deterioration models were developed based on the data collected and analyzed by the Sustainable Water Infrastructure Management (SWIM) Center at Virginia Tech.
This data was collected from 500 water utilities and 100 federal facilities across the US and includes pipelines of different materials, such as cast iron, ductile iron, prestressed concrete, reinforced concrete, steel, PVC, HDPE, and others.
If you would like to view more details about the Virginia Tech source data and studies, you can access their congressional reports by submitting your name and email.
The industry standard curves available in Info360 Asset deterioration models are listed in the table.
Important: If you plan to use these in your deterioration model, make sure that you set up your
asset groups so that they align with the available curves.
| Material | Diameter | Year Laid (only for Cast Iron) |
|---|---|---|
| Ductile Iron (DI) | < 16 inches | |
| Ductile Iron (DI) | 16-36 inches | |
| Ductile Iron (DI) | > 36 inches | |
| Cast Iron (CI) | < 16 inches | pre 1930 |
| Cast Iron (CI) | < 16 inches | post 1930 |
| Cast Iron (CI) | 16-36 inches | pre 1930 |
| Cast Iron (CI) | 16-36 inches | post 1930 |
| Cast Iron (CI) | > 36 inches | pre 1930 |
| Cast Iron (CI) | > 36 inches | post 1930 |
| Steel | < 16 inches | |
| Steel | 16-36 inches | |
| Steel | > 36 inches | |
| Galvanized Iron (GI) | < 16 inches | |
| Prestressed Concrete Cylinder Pipe (PCCP) | < 16 inches | |
| Prestressed Concrete Cylinder Pipe (PCCP) | 16-36 inches | |
| Prestressed Concrete Cylinder Pipe (PCCP) | > 36 inches | |
| Reinforced Concrete Cylinder Pipe (RCCP) | < 16 inches | |
| Reinforced Concrete Cylinder Pipe (RCCP) | 16-36 inches | |
| Asbestos Cement | < 16 inches | |
| Asbestos Cement | 16-36 inches | |
| Polyvinyl Chloride | < 16 inches | |
| Polyvinyl Chloride | 16-36 inches | |
| High-Density Polyethylene | < 16 inches | |
| High-Density Polyethylene | 16-36 inches |