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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 > Transportation, hydraulic and utility facilities > Hydraulic structures > Dams > Parts of dams

Pmhm: Dams
Pmhmr: Parts of dams
 Pmhmrf: Dam foundations
 Pmhmrh: Fish ladders
 Pmhmrm: Sluices
 Pmhmrp: Spillways

Find documents having Parts of dams

Broader Term:
Pmhm: Dams
 
Related Terms:
Pmhmb: Types of dams
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