Table 6.25 — EAs with labels beginning with U
Label Concept definition Figure(s) Attribute value type EQ label Code
UNCOVERING_HEIGHT_KNOWN An indication that information is known about the <<HEIGHT>> to which a <MARINE_OBJECT> may be uncovered by the <TIDE>; uncovering height known.   BOOLEAN   1487
UNDERBRIDGE_CLEARANCE The clearance below a <BRIDGE> measured from the lowest level of the bridged <SURFACE> to the base of the lower of either a cross <STRUCTURAL_BEAM> or lowest deck of the <BRIDGE>; underbridge clearance.   REAL LENGTH 1488
UNDERLYING_MATERIAL-
_CHARACTERISTIC
The characteristics of the composition of the <MATERIAL> underlying the <SURFACE> of an <OBJECT>.   ENUMERATION   1489
UNDERLYING_MATERIAL_TYPE The type of composition of the <MATERIAL> underlying the <SURFACE> of an <OBJECT>.   ENUMERATION   1490
UPSTREAM_HEIGHT The height of an <OBJECT> above a <WATERCOURSE> measured on the upstream side.   REAL LENGTH 1491
URBAN_BUILDING_LIGHTING-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the <LIGHTING> on an urban <BUILDING>. Zero means unlit and one means maximum intensity.   REAL PURE_NUMBER 1492
URBAN_STREET_LIGHTING-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the <LIGHTING> on an urban <STREET>. Zero means unlit and one means maximum intensity.   REAL PURE_NUMBER 1493
URBAN_STREET_PATTERN The predominant geometric configuration of <STREET>s found within a delineated <TERRAIN_SURFACE_REGION>; urban street pattern.   ENUMERATION   1494
URBAN_TERRAIN_ZONE_TYPE The type of an urban terrain zone based on the characterization of <BUILDING>s and their density.   ENUMERATION   1495
USABLE_LENGTH The usable <<LENGTH>> of an <OBJECT>.   REAL LENGTH 1496
UTILITY_USE The type of a <FACILITY> that is used for utility provision purposes; utility use.   ENUMERATION   1498