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Transportation Research Thesaurus

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Each term in the TRT is assigned a unique notational code that conveys its location within the hierarchy. The first letter of the notation represents the facet or top term. Using the notational code it is easy to determine the terms relation in the hierarchy. The term's parent (Ae) will have one less letter (from the right end) as the term (Aea). Siblings (Aeg, Aes) will have the same notational code as the term except the last letter will be different. Children (Aeac, Aeah) will have one letter appended to the end of the notational code of the term.

Hierarchical Display

Top Terms> Facilities > Structures > Structural parts > Environmental and sanitary systems in buildings

Pbp: Structural parts
Pbpv: Environmental and sanitary systems in buildings
 Pbpvb: Air conditioning systems
Click to expand Pbpvc: Cooling systems
Click to expand Pbpve: Electrical systems
Click to expand Pbpvh: Heating systems
 Pbpvj: Insulation systems
 Pbpvm: Lighting systems
Click to expand Pbpvp: Plumbing systems
 Pbpvv: Ventilation systems

Find documents having Environmental and sanitary systems in buildings

Cross Reference:
Qtpm: Heating, cooling and ventilation equipment
 
Broader Term:
Pbp: Structural parts
 
Related Terms:
Pbpb: Structural members
Pbpy: Transportation systems in buildings
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