|Type d'accessoire composé|
|Zusatzgerät / Einbauteil - Typ|
The element component type IfcDiscreteAccessoryType defines commonly shared information for occurrences of discrete accessorys. The set of shared information may include:
- common properties with shared property sets
- common representations
- common materials
- common composition of elements
It is used to define a discrete accessory type specification indicating the specific product information that is common to all occurrences of that product type.
The IfcDiscreteAccessoryType may be declared within IfcProject or IfcProjectLibrary using IfcRelDeclares and may be exchanged with or without occurrences of the type. Occurrences of IfcDiscreteAccessoryType are represented by instances of IfcDiscreteAccessory.
HISTORY New entity in IFC4.
Type Use Definition
The exact type information of the
IfcDiscreteAccessoryType is given in the
PredefinedType attribute, possibly in combination with the
ElementType attribute inherited from
IfcElementType. Standard ElementType designations are
provided for guideline below. The list is not exhaustive and
the list of definitions may be extended based on local
Corbels as separate components:
'Hidden steel corbel': Corbel system made from steel
components embedded into the master element.
'Visible steel corbel': Corbel system made from
steel components protruding from the master element.
'Visible concrete corbel': Corbel system made as a
separate precast concrete component added to the master
Connecting accessories, for example for sandwich wall panels:
'Diagonal truss connector': A fixing device in truss
form with diagonal cross bars holding two precast conrete
panels together in a sandwich wall panel.
'Ladder truss connector': A fixing device in truss
form with straight cross bars in ladder form holding two
precast conrete panels together in a sandwich wall panel.
'Panel suspender': A straight fixing device holding
two precast conrete panels together in a sandwich wall
Electrical accessories for precast concrete elements:
'Protective plug': Protective plug used in element
for protecting electrical accessories during manufacturing,
transportation and assembly.
'Standard fixing plate': Standard fixing plate.
'Edge fixing plate': Fixing plate attached to the
edge of an element.
'Corner fixing plate': Fixing plate attached to the
corner of an element.
'Slab fixing plate': Fixing plate for slabs.
'Channel fixing': Fixing channels, often realized as cast-in channels.
'Balcony hinge': Accessory supporting and fixing balconies.
'Frame shoe': Fixing shoe for frames.
'Thermo frame': Thermo frame.
'Column shoe': Fixing shoe for columns.
'Wall shoe': Fixing shoe for walls.
'Fixing socket': Fixing socket.
'Neoprene bearing plate': Rubber plate used as a
bearing in, for example, joints between column corbels and
'Working joint reinforcement': Reinforcement
accessory used in working joints.
'Expansion joint reinforcement': Reinforcement
accessory used in expansion joints.
'Ribbed steel bar extension': Extension accessory
made of a ribbed (reinforcement) bar used in joints.
'Steel pin bolt': Pin bolt used to join together,
for example, columns and beams.
'Concrete dowel': Dowel pin used in joints.
'Concrete groove': A groove made in a joint.
'Steel plate': A steel plate used as an accessory in
'Wire loop': A joint connector accessory made from a
'Steel loop': A joint connector accessory made from
a steel bar loop.
'Sealing strip': A strip sealing the joint.
'Sealing compound': Sealing compound protecting and
sealing the joint.
'Wire lifting hook': A lifting aid in the form of a
'Steel lifting hook': A lifting aid in the form of a
steel bar loop.
'Lifting socket': A lifting aid in the form of a
'Steel lifting anchor': A lifting aid in the form of
a steel lifting anchor.
'Lifting hole': A lifting aid in the form of a hole.
Accessories mainly used in the building services domain:
'Antivibration' : An isolating device to prevent
other elements to be effected by vibrations.
'Drop rod' : A length of material providing a
hanging support to a bracket. Note that a drop rod is
considered to include nuts and washers required for
'Duct foot' : A base support used to receive a
vertical pipe .
'Framing' : A frame placed around a penetration to
prevent scraping against the building surface or structure.
'Grommet' : An element placed within a penetration
that seals the penetration for a particular reason.
'Rack' : A set of shelving for the purposes of
storage that may be freestanding or bolted to a structure.
'Safety part' : A part, typically installed in
vertical shafts at each level, to ensure safety from
falling when entering the shaft.
'Sleeve' : A thin barrier placed between a
penetration and a penetrating element.
'Support section' : A section of material that is
used as an intermediate support upon which multiple
brackets can be mounted.
XSD Specification: <xs:element name="IfcDiscreteAccessoryType" type="ifc:IfcDiscreteAccessoryType" substitutionGroup="ifc:IfcElementComponentType" nillable="true"/>
<xs:attribute name="PredefinedType" type="ifc:IfcDiscreteAccessoryTypeEnum" use="optional"/>
|CorrectPredefinedType|| : ||(PredefinedType <> IfcDiscreteAccessoryTypeEnum.USERDEFINED) OR
((PredefinedType = IfcDiscreteAccessoryTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));|
|PredefinedType|| : ||Subtype of discrete accessory|
|CorrectPredefinedType|| : ||
The inherited attribute ElementType shall be provided if the PredefinedType is set to USERDEFINED.
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