IfcZShapeProfileDef
Definition
from IAI: The IfcZShapeProfileDef
defines
a section profile that provides the defining parameters of a Z-shape
section to be used by the swept area solid. Its parameters and
orientation relative to the position coordinate system are according to
the following illustration. The centre of the position coordinate
system is in the
profiles centre
of the gravity
bounding box.
HISTORY: New entity
in
Release IFC2x Edition 2.
Illustration:
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Position
The parameterized profile defines its own position coordinate system.
The underlying
coordinate system is defined by the swept area solid
that uses the profile definition. It is the xy plane of:
- IfcSweptAreaSolid.Position
by using offsets of the position location, the parameterized profile
can be positioned centric (using x,y offsets = 0.), or at any position
relative to the profile. Explicit coordinate offsets are used to define
cardinal points (e.g. upper-left bound).
Parameter
The parameterized profile
is defined by a set of parameter attributes, see attribute definition
below.
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Table: Parameters of Z-shape profile definition
EXPRESS specification:
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| WR21
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FlangeThickness < (Depth / 2.);
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Attribute definitions:
| Depth
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Web length, see illustration above (= h).
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| FlangeWidth
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Flange length, see illustration above (= b).
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| WebThickness
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Constant wall thickness of web, see illustration above (= ts).
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| FlangeThickness
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Constant wall thickness of flange, see illustration above (= tg).
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| FilletRadius
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Fillet radius according the above illustration (= r1). If it is not given, zero is assumed.
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| EdgeRadius
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Edge radius according the above illustration (= r2). If it is not given, zero is assumed.
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Formal Propositions:
| WR21
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The flange thickness shall be smaller than half of the depth.
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Inheritance graph
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| ENTITY IfcZShapeProfileDef;
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