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Usable Length (LNU)

DGIF baseline 2026-1, the latest. Earlier baselines: timemap.

RDF: lnu.ttl

Name

usableLength

Datatype

RealInterval

Definition

The interior length of a structure (for example: an aircraft bunker or a lock).

Description

The length is taken along the primary alignment of the structure. If the structure is irregular in shape the length is along its greatest horizontal dimension, else if the structure is regular in shape then a shape-specific rule may apply: for a rectangular structure, the length of the longer axis; for a round structure, the diameter.

Accepted

2013-10-18

Defined by

DFDD

Physical quantity

length

Recommended unit

Metre (m)

Used by

• GB230 Aircraft Hangar
• GB250 Hardened Aircraft Shelter
• GB015 Apron
• BI030 Lock
• BI006 Ship Elevator
• BB090 Dry Dock
• BB199 Floating Dry Dock

Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.