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  • Register to website — Welcome to buildingSMART-Tech.org
    and documents from this website Privacy notice We may use the registration information to provide you with notices of new information that may be of use or interest to users This may include announcement of updates on buildingSMART specifications accompanying documentations tutorials or general website update notices We will not sell share or rent this information to others Please read the Terms and Conditions for this site before you register How to register to this website Step 1 Register Step 2 Fill in the minimum information required a valid email address is essential Step 3 Send the registration request Step 4 You will receive a confirmation email step 5 finalize your registration and set your password you are now registered to this website You can now download specifications and documents and continue to register to the issue resolution database in order to contribute actively Implementation get involved register to website register to issue database use issue database first steps and tools IFC2x3 impl guidance IFC4 impl guidance Implementer s community accompanying documents frequently asked questions Implementations Search Advanced Search IFC Dev Blog IFC Dev Blog More Registration This site contains content which is only available to registered users To get

    Original URL path: http://www.buildingsmart-tech.org/implementation/get-involved/register-website/ (2016-02-11)
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  • Computer interpretable listings
    available in computer interpretable form that may be parsed by computer NOTE A txt extension has been appended to the name of the ASCII file in order to ensure that it displays properly in a web browser To use one of these files in a software application remove the txt extension Official schema publications for this release are at the following URLs IFC EXPRESS http www buildingsmart tech org ifc

    Original URL path: http://www.buildingsmart-tech.org/ifc/IFC4/Add1/html/annex/annex-a.htm (2016-02-11)
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  • FM Aquarium Reference Files — Welcome to buildingSMART-Tech.org
    Home Specifications MVD Releases Basic FM Handover View FM Aquarium Reference Files Info Error Cookies are not enabled You must enable cookies before you can log in Login Name Password Forgot your password If you have forgotten your password we can send you a new one New user If you do not have an account here head over to the registration form This site is the 2008 2016 of buildingSMART

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition/fm-handover-aquarium/fm-aquarium-reference-files/login_form (2016-02-11)
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  • FM Handover Quality Criteria — Welcome to buildingSMART-Tech.org
    Home Specifications MVD Releases Basic FM Handover View FM Handover Quality Criteria Info Error Cookies are not enabled You must enable cookies before you can log in Login Name Password Forgot your password If you have forgotten your password we can send you a new one New user If you do not have an account here head over to the registration form This site is the 2008 2016 of buildingSMART

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition/fm-handover-aquarium/fm-handover-quality-criteria/login_form (2016-02-11)
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  • IfcZone
    of zone cannot overlap with respect to that analysis but may overlap otherwise NOTE One of the purposes of a zone is to define a fire compartmentation In this case it defines the geometric information about the fire compartment through the contained spaces and information whether this compartment is ventilated or sprinkler protected In addition the fire risk code and the hazard type can be added the coding is normally defined within a national fire regulation All that information is available within the relevant property sets RECOMMENDATION In case of a zone denoting a fire compartment the following types should be used if applicable as values of the ObjectType attribute FireCompartment a zone of spaces collected to represent a single fire compartment ElevatorShaft a collection of spaces within an elevator potentially going through many storeys RisingDuct RunningDuct Additional classifications of the IfcZone as provided by a national classification system can be assigned by using the IfcRelAssociatesClassification relationship HISTORY New entity in IFC Release 1 0 Property Set Use Definition The property sets relating to the IfcZone are defined by the IfcPropertySet and attached by the IfcRelDefinesByProperties relationship It is accessible by the inverse IsDefinedBy relationship The following property set definitions specific to the IfcZone are part of this IFC release Pset ZoneCommon common property set for all types of zone Pset SpaceFireSafetyRequirements common property set for all types of zones to capture the fire safety requirements Pset SpaceLightingRequirements common property set for all types of zones to capture the lighting requirements Pset SpaceOccupancyRequirements common property set for all types of zones to capture the occupancy requirements Pset SpaceThermalRequirements common property set for all types of zones to capture the thermal requirements EXPRESS specification ENTITY IfcZone SUBTYPE OF IfcGroup WHERE WR1 SIZEOF QUERY temp SELF IfcGroup IsGroupedBy RelatedObjects NOT IFCPRODUCTEXTENSION IFCZONE

    Original URL path: http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcproductextension/lexical/ifczone.htm (2016-02-11)
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  • IfcSpace
    area covered by elements inside the space columns inner walls etc or by ceiling openings The ceiling area is the real and not the projected area e g in case of sloped ceilings The exact definition and calculation rules depend on the method of measurement used IfcQuantityArea GrossWallArea Calculated sum of all wall areas bounded by the space It normally includes the area covered by elements inside the wall area doors windows other openings etc The exact definition and calculation rules depend on the method of measurement used IfcQuantityArea NetWallArea Calculated sum of all wall areas bounded by the space It normally excludes the area covered by elements inside the wall area doors windows other openings etc Special rules apply for areas that have a low headroom The exact definition and calculation rules depend on the method of measurement used IfcQuantityArea GrossVolume Calculated gross volume of all areas enclosed by the space normally including the volume of construction elements inside the space The exact definition and calculation rules depend on the method of measurement used IfcQuantityVolume NetVolume Calculated net volume of all areas enclosed by the space normally excluding the volume of construction elements inside the space The exact definition and calculation rules depend on the method of measurement used IfcQuantityVolume Spatial Structure Use Definition The IfcSpace is used to build the spatial structure of a building that serves as the primary project breakdown and is required to be hierarchical The spatial structure elements are linked together by using the objectified relationship IfcRelAggregates The IfcSpace references them by its inverse relationships IfcSpace Decomposes referencing IfcSite IfcBuildingStorey IfcSpace by IfcRelAggregates RelatingObject If it refers to another instance of IfcSpace the referenced IfcSpace needs to have a different and higher CompositionType i e COMPLEX if the other IfcSpace has ELEMENT or ELEMENT if the other IfcSpace has PARTIAL IfcSpace IsDecomposedBy referencing IfcSpace by IfcRelAggregates RelatedObjects If it refers to another instance of IfcSpace the referenced IfcSpace needs to have a different and lower CompositionType i e ELEMENT if the other IfcSpace has COMPLEX or PARTIAL if the other IfcSpace has ELEMENT If there are building elements and or other elements directly related to the IfcSpace like most furniture and distribution elements they are associated with the IfcSpace by using the objectified relationship IfcRelContainedInSpatialStructure The IfcSpace references them by its inverse relationship IfcSpace ContainsElements referencing any subtype of IfcProduct with the exception of other spatial structure element by IfcRelContainedInSpatialStructure RelatedElements Attribute Use Definition The following figure describes the heights and elevations of the IfcSpace Geometry Use Definitions The geometric representation of IfcSpace is given by the IfcProductDefinitionShape and IfcLocalPlacement allowing multiple geometric representations NOTE1 If the surrounding instances of IfcRelSpaceBoundary define a complete geometric representation of a particular representation view for that space then this view shall be omitted from the multiple representations of IfcSpace NOTE2 In cases of inconsistency between the geometric representation of the IfcSpace and its surrounding IfcRelSpaceBoundary the geometric representation of the space should take priority over the geometric

    Original URL path: http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcproductextension/lexical/ifcspace.htm (2016-02-11)
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  • IfcRelContainedInSpatialStructure
    a hierarchical relationship an element can only be contained within a single spatial structure element The reference relationship between an element and the spatial structure may not be hierarchical i e an element can reference many spatial structure elements NOTE The reference relationship is expressed by IfcRelReferencedInSpatialStructure Predefined spatial structure elements to which elements can be assigned are site as IfcSite building as IfcBuilding storey as IfcBuildingStorey space as IfcSpace Occurrences of the same element type can be assigned to different spatial structure elements depending on the context of the occurrence EXAMPLE A wall might be normally assigned to a storey however the curtain wall might be assigned to the building and the retaining wall in the terrain might be assigned to the site HISTORY New entity in IFC Release 2x IFC2x PLATFORM CHANGE The data type of the attribute RelatedElements has been changed from IfcElement to its supertype IfcProduct with upward compatibility for file based exchange Containment Use Definition The figure shows the use of IfcRelContainedInSpatialStructure to assign a stair and two walls to two different levels within the spatial structure EXPRESS specification ENTITY IfcRelContainedInSpatialStructure SUBTYPE OF IfcRelConnects RelatedElements SET 1 OF IfcProduct RelatingStructure IfcSpatialStructureElement WHERE WR31 SIZEOF QUERY

    Original URL path: http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcproductextension/lexical/ifcrelcontainedinspatialstructure.htm (2016-02-11)
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  • IfcRelSpaceBoundary
    this virtual boundary is between two spaces and the correct location is of interest the attribute RelatedBuildingElement shall point to an instance of IfcVirtualElement and the attribute ConnectionGeometry is required to be inserted NOTE The connection geometry either by a 2D curve or a 3D surface is used to describe the portion of the virtual wall that separates the two spaces All instances of IfcRelSpaceBoundary given at the adjacent spaces share the same instance of IfcVirtualElement Each instance of IfcRelSpaceBoundary provides in addition the ConnectionGeometry given within the local placement of each space NOTE IfcVirtualElement has been introduced in IFC2x2 Addendum 1 to facilitate virtual space boundaries If the IfcRelSpaceBoundary is used to express a physical boundary between two spaces the attribute PhysicalOrVirtualBoundary has to be set to PHYSICAL The attribute RelatedBuildingElement has to be given and points to the element providing the space boundary The attribute ConnectionGeometry may be inserted in this case it describes the physical space boundary geometrically or it may be omitted in that case it describes a physical space boundary logically Geometry Use Definitions The IfcRelSpaceBoundary may have geometry attached If geometry is not attached the relationship between space and building element is handled only on a logical level If geometry is attached it is given within the local coordinate systems of the space and if given in addition of the building element NOTE The attributes CurveOnRelatingElement at IfcConnectionCurveGeometry or SurfaceOnRelatingElement at IfcConnectionSurfaceGeometry provide the geometry within the local coordinate system of the IfcSpace whereas the attributes CurveOnRelatedElement at IfcConnectionCurveGeometry or SurfaceOnRelatedElement at IfcConnectionSurfaceGeometry provide the geometry within the local coordinate system of the subtype of IfcElement The connection geometry when given can be given as a curve for 2D representations of space boundaries or as a surface for 3D representations of space boundaries Note

    Original URL path: http://www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcproductextension/lexical/ifcrelspaceboundary.htm (2016-02-11)
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