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"Average" Performers
A statement, that is qualitative and/or quantitative, on the results of a single asset or a single building when compared to others in the same class.

1.  In reference to an asset, an asset that achieves a service life that is equal to the modal year on the probability distribution when compared to all assets of the same class (equal life group).


2.  In reference to a building, the reinvestment funding requirements are close to the average of all the buildings in the statistical population.



Attributes
Listed below are some of the attributes of "average" performer asset scenarios

Examples
Included below are some examples of "average" performer scenarios relative to asset performance
  • The average 2-ply SBS roof achieves a service life of 25 years and our roof lasted exactly 25 years. It is therefore an average performer.
  • Our boiler provided us with 1 5years of good service before it needed to be replaced, which is typical for that kind of boiler.

Causes
Listed below are some of the reasons why an asset will exhibit average performer characteristics:

Analysis
Understanding of high performers requires analysis relative to the following statistical concepts

  • Variability in Service Life
  • Narrow Dispersion and Wide Dispersion


Management Principles
Included below are some of the asset management principles to be considered in relation to high performer assets
Three performance classes along a right-modal survivor curve.  
Fig. Three performance classes along a right-modal survivor curve.


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Fig. Curve indicating the impact of maintenance on the service life of assets.


Survivor curve with an overlay of the PF interval to correlate the generic class to the local circumstances
Fig. A generic survivor curve overlaid with the points of potential failure (P) and functional failure (F) of the same asset at two buildings to draw the correlation between the maxima (the class) and the minima (the site conditions). Building A has the average performer asset.

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