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IfcCompoundPlaneAngleMeasure

Definition from IAI: A compound measure of plane angle in degrees minutes and seconds of arc.

NOTE: IfcCompoundPlaneAngleMeasure is used where angles need to be described to an accuracy of less than one degree and expressed as parts of an arc. It may be used for angular measurement by surveyors or for other angular measurements where precision is required. It should not be used for angular measurements which may be expressed in decimal fractions of a degree; for which purpose the IfcPlaneAngleMeasure is provided.
Type: LIST [3:3] OF INTEGER

EXPRESS specification:

TYPE IfcCompoundPlaneAngleMeasure = LIST [3:3] OF INTEGER;
WHERE
WR1  :  { 0 <= SELF[1] < 360 };
WR2  :  { 0 <= SELF[2] < 60 };
WR3  :  { 0 <= SELF[3] < 60 };
END_TYPE;

Formal Propositions:

WR1  :  The first measure (grad) shall be between 0 and 360 degree.
WR2  :  The first measure (minutes) shall be between 0 and 60.
WR3  :  The first measure (seconds) shall be between 0 and 60.

References (1):

Name Type Referred through Express-G
IfcDerivedMeasureValue Select
Select relation
Diagram 3