A facility is a group of assets located within a designated area that are associated in some way.
The International Infrastructure Management Manual defines a facility as "a complex comprising many assets (e.g. a hospital, water treatment plant, recreation complex, etc.) which represents a single management unit for financial, operational, maintenance or other purposes."
The Glossary of Asset Management Terms in the Guidelines for implementing Total Management Planning defines a facility as "a group of assets that provides a function or service (e.g. pump station, reservoir, treatment plant, reticulation system)."
The Facility level is generally the highest level of the asset structure and provides an Asset Group (which can contain asset classes - refer examples below)
A specific building is a facility that will generally be made up of a number of assets (asset components).
A Building Facility can include;
Roof, Walls, Floors, Internal fittings, Mechanical equipmment, Electrical equipment, access ways, etc
For transportation, the facility level might be the Road Reserve.
This facility level of road reserve could be made up of the following components;
Road components (surface, pavement, earthworks), K&G, Footpaths, Trees, Drainage, signs, meters, litter bins, street furniture (seats, bus shelters) etc.
The facility level is a high level way of grouping assets into a logical and manageable set of related assets (often based on management responsibilities e.g. Roads & Traffic Group)