Installations that require special attention, techniques, and materials are not covered, including
1. Piping through rigid walls.
2. Piping on supports above or below ground.
3. Piping requiring insulation.
4. treatment plant or pump station piping.
5. Industrial piping.
6. Piping through geologically hazardous areas.
7. Piping in high density stray current environments.
8. Piping through corrosive soil.
9. Piping through unstable soil.
10. Piping subjected to excessive loads.











