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  • IFC4 Release Summary — Welcome to buildingSMART-Tech.org
    you to subscribe to the ifc4 mailing list that is hosted here use this link to subscribe and maintain your account after subscription you will receive an automatic notification with the mailing address and you will receive further announcements and information What is new in IFC4 The following presentation held at the official release date shows the major highlights of IFC4 IFC4 What is new the major highlights IFC4 at a glance enhances the capability of the IFC specification in its main architectural building service and structural elements with new geometric parametric and other features enables numerous new BIM workflows including 4D and 5D model exchanges product libraries BIM to GIS interoperability enhanced thermal simulations and sustainability assessments improves readability and ease of access to the documentation with numerous implementation concepts and fully linked examples contains ifcXML4 schema fully integrated into the IFC specification in addition to the EXPRESS schema is fully integrated with new mvdXML technology and allows easy definition of data validation services for IFC4 data submissions corrects technical problems found since the release of the IFC2x3 enables the extension of IFC to infrastructure and other parts of the built environment Why implement IFC4 Keep your customers happy by improving your IFC support Take advantage of the technical improvements and consistency of IFC4 Remember it is now possible to formally support model view definitions and validate them Base your development of a fully documented IFC4 Model View Definition MVD thanks to mvdXML formal specification Benefit from IFC the easy way with Simple ifcXML Use multi lingual property definitions linked to the buildingSMART data dictionary to customize your products Broaden your IFC support with the new IFC4 objects and workflows it will help you to attract new customers Reach a wider market with IFC4 as a full ISO standard

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-releases/ifc4-release/ (2016-02-11)
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  • IFC4 to IFC4 ADD1
    addition of a new geometric item for indexed based poly curves It requires the addition of the following entities and types entities IfcIndexedPolyCurve IfcCartesianPointList2D select type IfcSegmentIndexSelect defined types IfcArcIndex IfcLineIndex Minor corrections and improvements to the IFC4 ADD1 schema include Use of defined types throughout the schema i e using IfcInteger instead of including the addition of IfcBinary Use of the new type IfcPositiveInteger to restrict the indices used e g for tessellated items to positive one based integers Adding the missing attribute LongName to IfcBuildingSystem in order to make it consistent with IfcDistributionSystem Promoting the inverse attribute HasCoverings from IfcBuildingElement to IfcElement to enable the inverse navigation also for IfcDistributionElement Adding the inverse attribute HasCoordinateOperation to IfcGeometricRepresentationSystem and IfcCoordinateReferenceSystem to enable the inverse navigation to the GIS coordinate transformation Making the indespensible Name attribute mandatory at IfcCoordinateReferenceSystem while making the GeodeticDatum optional Changing the cardinality of the inverse attribute DefinesOccurrence at IfcPropertySetDefinition to allow property sets to be shared by many such relationships Adding the where rule NoCoordOperation to IfcGeometricRepresentationSubContext to prevent the use of conflicting GIS transformations of sub contexts Adding the where rule UnboundedSurface to IfcBoxedHalfSpace to prevent the use of bounded surfaces as clipping planes

    Original URL path: http://www.buildingsmart-tech.org/ifc/review/IFC4Add1/beta/html/annex/annex-f/ifc4-to-ifc4-add1/index.htm (2016-02-11)
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  • Cover page
    This document is owned and copyrighted by buildingSMART International Limited By using the IFC4 specification you agree to the following copyright notice Browsing the IFC4 specification with full functionality requires

    Original URL path: http://www.buildingsmart-tech.org/mvd/IFC4Add1/RV/1.0/html/cover.htm (2016-02-11)
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  • Coordination View Version 2.0 Summary — Welcome to buildingSMART-Tech.org
    Coordination View Version 2 0 has been selected as the first model view definition MVD to be certified under the new Certification 2 0 program established by buildingSMART International The official certification program its guiding documents the current participating companies and other information can be found here IFC2x3 Coordination View V2 0 Certification Program Documents for the Coordination View Version 2 0 CV V2 0 File header Coordination View Version 2 0 declaration in IFC file header section CV V2 0 Formal sub schema Coordination View Version 2 0 formal IFC2x3 sub schema includes List of all IFC2x3 entities included in CV 2 0 IFC2x3 EXPRESS schema for CV 2 0 and IFC2x3 EXPRESS G Diagram for CV 2 0 CV V2 0 Concepts Coordination View Version 2 0 scope definition by model view concepts being supported includes List of concept templates list of re usable concepts utilized by CV 2 0 List of concept roots list of all supported elements like wall furniture fastener or distribution element with applicable concepts and List of rules applied to the supported elements Attribute list with rules assigned to each attribute path definition Property Set scope Coordination View Version 2 0 property sets Pset List Questions Answers The Coordination View has been first developed as a binding implemented for the IFC2x release later adopted for the IFC2x2 release and is available as the Coordination View Version 1 0 for the IFC2x3 TC1 release It has been used for IFC Certifications until 2009 It is currently replaced by the Coordination View Version 2 0 Main targets of the new Version 2 0 are to provide a full and syntactically complete and correct sub model of the IFC2x3 TC1 schema to be compatible with extension by so called Add on views to be more strictly

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition/ifc4-reference-view/coordination-view-v2.0/summary (2016-02-11)
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  • MVD Overview summary — Welcome to buildingSMART-Tech.org
    a way to specifically indicate what data is needed When parties are involved in a contract requiring data to be provided a contract may indicate that data is to be delivered according to a specific Model View Definition and such data may be automatically validated to determine conformance Model View Definitions MVDs are encoded in a format called MVDXML and define allowable values at particular attributes of particular data types For example an MVD may require that a wall provide a fire rating a classification according to OmniClass Table 22 and information required for structural analysis such as elastic modulus of materials In simple cases such rules may define a single attribute on a single data type while more complex cases may consist of graphs of objects and collections Various validation formats are already commonplace in the software industry for checking data conformance such as XML Schema Definition XSD EXPRESS ISO 10303 11 Schematron and validation frameworks within programming languages and tools e g NUnit JUnit It is not the goal of MVDXML to replace such approaches but rather automate them such that information requirements can be defined at a higher level where downstream validation formats can be automatically generated rather than relying on manual efforts which are error prone and may become out of sync with specifications However validation is only one use for MVDXML the higher level nature of MVDXML enables many other uses as follows Software applications may make use of MVDXML either statically designed to support a particular model view or dynamically designed to support any model view Examples of dynamic functionality that may be supported include Exporting data that is automatically filtered to include only data within a model view Downloading data from a server where MVDXML essentially serves as a query language Validating data

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition/mvd-overview/mvd-overview-summary (2016-02-11)
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  • Cover page
    2014 This document is owned and copyrighted by buildingSMART International Limited By using the IFC4 specification you agree to the following copyright notice Browsing the IFC4 specification with full functionality

    Original URL path: http://www.buildingsmart-tech.org/mvd/IFC4Add1/DTV/1.0/html/cover.htm (2016-02-11)
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  • IFC4 Design Transfer View — Welcome to buildingSMART-Tech.org
    Transfer View is to provide building information with support for editing of interconnected elements Such applications enable inserting deleting moving and modifying physical building elements and spaces An example of a target scenario is an architect providing building design information to an engineer for a particular discipline where geometric modifications may need to be made To enable such editing higher level design parameters must be preserved for those elements that affect multiple disciplines and applications must generate downstream geometry consistently according to such parameters The scope of parameters is limited to those that impact interconnected elements for example increasing window dimensions impacts composition of walls moving walls impacts geometry of connected walls adjoining spaces coverings and embedded elements adjusting pipes or ducts may require resizing openings Examples of this design transfer workflow are Coordination planning and execution combining different discipline specific IFC models for collaboration Integrated reference loading an IFC model usually from a different discipline as an integrated model Integrating and editing the spaces from an architectural IFC model into an MEP model Integrating and editing the load bearing elements of an architectural IFC model into a structural model Handover the complete discipline model for further work or archiving Enhanced support for use cases already identified for the IFC4 Reference View Clash detection and resolution finding clashes between different discipline specific IFC models Quantity take off determine the quantities of the various model elements with the IFC model Construction sequencing taking the IFC model and associating it to a construction schedule Common characteristics of the workflow using design transfer models are The source of the BIM information may be shared The basic parametric behavior and thereby the intellectual engineering property can be transfered The scope of parametric exchange is limited to dimension driven standard case elements The ownership of

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition/ifc4-design-transfer-view/ (2016-02-11)
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  • IFC2x3 CV V2.0 Certification Summary — Welcome to buildingSMART-Tech.org
    during the design phase It contains definitions of spatial structure building elements structural modeling elements and building service elements that are needed for coordinating design information among these disciplines It includes parametric shapes for a limited range of standard elements and the ability to also include non parametric shape for all other elements Property sets material definitions and other alphanumeric information can be assigned to those elements buildingSMART International Model View Definition for the IFC2x3 Coordination View V2 0 Workflow of the IFC2x3 Coordination View V2 0 Certification The certification process is organized in three parts verify the export of IFC files conforming to the IFC2x3 Coordination View Version 2 0 the export test files are created based on test instructions that are provided by the certification team The test instructions available as PDF files optionally as 2D DXF DWG files describe the exact content geometric and alphanumeric content and building structure and they are used by the participating software developers to create the export test case within their applications The created IFC export files are then uploaded to the certification platform and validated both automatically and manually The manual validation is guided by check items that conform to the concepts supported by the IFC2x3 Coordination View Version 2 0 The validation is first executed as a self check by the software developers and later counter checked by the approved certification tester verify the import of IFC files conforming to the IFC2x3 Coordination View Version 2 0 the import calibration files are provided as prevalidated IFC files by the certification team The participating software developers import them into their applications checks for the expected results and fill out manual check items The check items correspond to the concepts of the IFC2x3 Coordination View Version 2 0 Later the approved certification

    Original URL path: http://www.buildingsmart-tech.org/certification/ifc-certification-2.0/ifc2x3-cv-v2.0-certification/ (2016-02-11)
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