FEMA applies the 50% Rule to thefollowing types of facilities as explicitly mentioned in the document: ​

1. Individual Components of Systems:some text
    
   • Drainage channel or irrigation system: a section      from damaged node to damaged node. ​
    
   • Water or sewer line system: a section of piping      from damaged manhole to damaged manhole, a lift station, or a manhole      structure. ​
    
   • Water or wastewater treatment plant: a control      building, clarifier, or sedimentation pond. ​
    
   • Electrical distribution systems are evaluated for      replacement based on specific criteria. ​
 
2. Entire Facilities:some text
    
   • Bridges
    
   • Culverts
    
   • Buildings
    
   • Pumping stations
    
   • Piers
    
   • Pools, including integral pumping ​
    
   • Equipment
    
   • Lighting structures

For the facilities listed above, FEMA appliesthe 50% Rule either to individual components of the system or to the entirefacility to determine whether repair or replacement is more appropriate.