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1

Behind the Horizon
Any past event that is outside the planning horizon in the period before the base year.


Attributes
Events that are behind the horizon have the following attributes associated with their complete or incomplete status:

  • If they are complete there should be a logbook record, service report or other document to help establish status and a running total. 
  • If they are incomplete, they form part of an accumulated backlog of deferred maintenance and foreward workload and will need to be carried forward. (see: catch-up costs)
  • The events with have proximity if they occurred in the recent past.


Passage of Time Concepts
As a building ages each year, the base year shifts backwards by one year. The changes to the base year are represented by the following concepts:
The three facets of the planning horizon: a) behind-the horizon, b) the horizon ("red zone") and beyond-the-horizon.
Fig. The three facets of the planning horizon: a) behind-the horizon, b) in-the-horizon ("red zone") and c) beyond-the-horizon.


The shifting horizon moves events that were once in-the- horizon into the period called "behind-the-horizon"
Fig. The shifting horizon moves events that were once in-the- horizon into the period called "behind-the-horizon".


An incomplete event being carried forward from "behind-the-horizon" to "in-the-horizon".
Fig. An incomplete event being carried forward from "behind-the-horizon" to "in-the-horizon".


See also:
Compare with:

A 3D conceptual representation of the capital projects completed at a facility and therefore located behind-the-horizon
Fig.  A 3D conceptual representation of the capital projects completed at a facility and therefore located behind-the-horizon.


I. Care was over zealous in trying to reveal the corporate memory of his building, which is deeply and delicately ingrained like the living layers in tree growth rings
Fig. I. Care was over zealous in trying to reveal the corporate memory of his building, which is deeply and delicately ingrained like the living layers in tree growth rings.

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