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  • Summary — Welcome to buildingSMART-Tech.org
    ex xsd the common schema for all translated EXPRESS models containing the definitions for the header section and the general data types that results from the translation of the EXPRESS data types It is a part of ISO 10303 28 ed2 IFC2X3 xsd the IFC2x3 specific unit of serialization uos that contains the XSD definitions of all IFC specific classes relationships attributes and data types In addition the packages contains configuration files normally they are not of interest to implementers since the content is fixed The configuration files determine the way how the EXPRESS file was translated into XSD and refer to the configurable part of ISO 10303 28 ed2 configuration xml the configuration file chosen for ifcXML2x3 configuration xsd the schema definition being part of ISO 10303 28 ed2 The ifcXML2x3 file has the following name spaces and XSD file locations that should be used for online validation see also NameSpace Discussion page ex xsd name space urn iso org standard 10303 part 28 version 2 xmlschema common name space alias ex XSD schema location http www iai tech org ifcXML IFC2x3 FINAL ex xsd IFC2X3 xsd name space http www iai tech org ifcXML IFC2x3 FINAL name space

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifcxml-releases/ifcxml2x3-release (2016-02-11)
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  • summary — Welcome to buildingSMART-Tech.org
    the common schema for all translated EXPRESS models containing the definitions for the header section and the general data types that results from the translation of the EXPRESS data types It is a part of ISO 10303 28 ed2 IFC2X2 FINAL xsd the IFC2x2 specific unit of serialization uos that contains the XSD definitions of all IFC specific classes relationships attributes and data types In addition the packages contains configuration files normally they are not of interest to implementers since the content is fixed The configuration files determine the way how the EXPRESS file was translated into XSD and refer to the configurable part of ISO 10303 28 ed2 configuration xml the configuration file chosen for ifcXML2x2 configuration xsd the schema definition being part of ISO 10303 28 ed2 The ifcXML2x2 file has the following name spaces and XSD file locations that should be used for online validation see also name space discussion ex xsd name space urn iso org standard 10303 part 28 version 2 xmlschema common name space alias ex XSD schema location http www iai tech org ifcXML IFC2x2 FINAL ex xsd IFC2X2 FINAL xsd name space http www iai tech org ifcXML IFC2x2 FINAL name space

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifcxml-releases/ifcxml2x2-release (2016-02-11)
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  • simple ifcXML summary — Welcome to buildingSMART-Tech.org
    IFC model definitions This enables to reduce complexity and thus to simplify implementation It also reduces the file size which is leading to lower resource requirements A simple ifcXML is not only based on a subset of the entire IFC model also known as a Model View Definition but also makes further use of the configuration capabilities of the ISO 10303 28 standard for translating the IFC EXPRESS model into the ifcXML XSD model In addition to the configuration settings for the entire ifcXML XSD model it mainly adjusts relationships for a more efficient data management The specification of a simple ifcXML XSD model is generated with the steps as shown in the figure below According to this process a simple ifcXML package shall include the following specifications Model View Definition MVD provided as mvdXML specification IFC EXPRESS submodel and further documentation including use case definitions and example files ISO 10303 28 configuration settings for translating the IFC EXPRESS submodel to the simple ifcXML XSD model simple ifcXML XSD model Specifications IFC Overview IFC Releases ifcXML Overview ifcXML4 Release ifcXML2x3 Release ifcXML2x2 Release simple ifcXML mvdXML Overview MVD Releases Pset Releases BCF Releases Related Specifications Specification tools Search Advanced Search

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifcxml-releases/simple-ifcxml (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/mvd-overview (2016-02-11)
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  • mvdXML releases — Welcome to buildingSMART-Tech.org
    developments mvdXML Releases The first published release mvdXML 1 0 had been made available in 2013 as part of the IFC4 developments The oofficial IFC4 documentation is generated on the basis of mvdXML 1 0 mvdXML1 0 Documentation mvdXML1 0 XML Schema The current development release is mvdXML 1 1 The main focus is fixing small issues and inconsistencies found in mvdXML 1 0 greatly update and improve the documentation including several new examples and to add a reworked specification for including validation rules to the mvdXML standard mvdXML Version 1 1 is currently a buildingSMART International Candidate Standard see mvdXML 1 1 page mvdXML Format Scope An IFC Model View Definition defines a legal subset of the IFC Schema being complete and provides implementation guidance or implementation agreements for all IFC concepts classes attributes relationships property sets quantity definitions etc used within this subset It thereby represents the software requirement specification for the implementation of an IFC interface to satisfy the Exchange Requirements The Model View Definition XML format mvdXML captures the following Exchange Definitions indicating import and export scenarios for each model view Concept Roots indicating entities of the IFC schema included within the model view Concept Nodes indicating rules for valid attribute values and referenced types Concept Templates which may be re used across related entities Exchange Requirements indicating mandatory optional or excluded concepts for each exchange Usage of mvdXML files is intended for several scenarios Test servers performing automated validation of IFC files for conformance or application certification Documentation and diagrams generated for IFC and IFC model view definitions Software applications performing automated filtering or validation of IFC files for model views Check for completeness of IFC based data for agreed and contracted exchanges validation Specifications IFC Overview IFC Releases ifcXML Overview mvdXML Overview mvdXML Releases

    Original URL path: http://www.buildingsmart-tech.org/specifications/mvd-overview/mvdxml-releases (2016-02-11)
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  • Model View Definition Summary — Welcome to buildingSMART-Tech.org
    s to earlier publications of MVD s in general is the publication as a full documentation and schema definition subset for human reference so no need to look into different documentations to find MVD relevant information a computer readable publication as mvdXML and as EXPRESS XSD sub schemas so MVD s can be parsed filtered and later validated Model View Definitions for IFC2x3 These are the MVD s that are currently in place and supported by software tools the IFC2x3 Coordination View Version 2 0 available supersedes IFC2x3 Coordination View currently in process of finalization and providing the basis for IFC2x3 Coordination View Certifications from 2010 onwards The IFC2x3 Coordination View Version 2 0 can be extended by the following add on model view definitions An add on view extends a base MVD by some small concepts that need to supported in addition to support additional exchange requirements The currently defined add on views include the Quantity Take off add on view it adds the ability to transmit base quantities for all spatial building building service and structural elements the Space boundary add on view it supports the use case of using BIM in thermal and energy analysis by adding building element to space relationships the 2D Annotation add on view it supports the exchange of additional 2D element representations and annotations of building models the IFC2x3 Coordination View released outdated as of Jan 2010 Version 1 0 finalized in 2007 that had been the basis of IFC2x3 Coordination View Certifications until 2009 the IFC2x3 Structural Analysis View released Version 1 0 finalized in 2008 the IFC2x3 Basic FM HandOver view released Version 1 1 developed within the buildingSMART aquarium project FM Handover View Model View Definitions developed outside of buildingSMART International Several other Model View Definitions are currently under

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition (2016-02-11)
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  • IFC4 Reference View — Welcome to buildingSMART-Tech.org
    recommend to 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 Purpose of the IFC4 Reference View The main purpose of the IFC4 Reference View is to define a standardized subset of the IFC4 schema a Model View Definition MVD that is particularly suitable for all BIM work flows that are based on reference models where the exchange is mainly one directional Here requested modifications of the BIM data mainly of the shape representation are handled by a change request to the original author and changes not executed upon the imported IFC data to be sent back to the original source Examples of this reference workflow are Coordination planning combining different discipline specific IFC models for visual checking Clash detection finding clashes between different discipline specific IFC models Background reference loading an IFC model usually from a different discipline as a linked model 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 Visual presentation for presenting the IFC model to a broad audience Common characteristics of the workflow using reference models are The source of the BIM information remains with the originator The full parametric behaviour and thereby the intellectual engineering property remains with the originator The ownership of the model and responsibility for its correctness remains with the originator The original model is published as IFC4 Reference View model reflecting the as is status The receiver of the IFC4 Reference View model has access to the full model content The receiver of the IFC4 Reference View is not

    Original URL path: http://www.buildingsmart-tech.org/specifications/ifc-view-definition/ifc4-reference-view (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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