Underground structures

Term
Metadata

Underground structures

Alternative terms

UF↸ Subsurface structures
UF↸ Underground facilities

Broader Terms

BT↑ Specialized facilities

More specific terms

NT3 ↓ Tunnels ►▼
- NT4 ↓ Parts of tunnels ►▼
  - NT5 ↓ Tunnel lining
  - NT5 ↓ Tunnel shafts ►▼
    - NT6 ↓ Crossheadings
  - NT5 ↓ Tunnel supports ►▼
    - NT6 ↓ Shields (Tunnels)
- NT4 ↓ Tunnels by use ►▼
  - NT5 ↓ Pedestrian tunnels
  - NT5 ↓ Pressure tunnels
  - NT5 ↓ Railroad tunnels ►▼
    - NT6 ↓ Subways
  - NT5 ↓ Vehicular tunnels ►▼
    - NT6 ↓ Toll tunnels
NT3 ↓ Underground parking garages
NT3 ↓ Wells

Date of creation

18-Mar-2009

Accepted term

18-Mar-2009

Descendant terms

16

ARK

ark:/99152/t3qk5w896nm348

More specific terms

3

Alternative terms

2

Related terms

0

Notes

0

Metadata

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