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Covers LOD 100 through LOD 500, detailing what can and cannot be reliably derived from the model at each stage, including geometry, orientation, interfaces, and the inclusion of asset information requirements. Highlights progression from generic or database-derived representation to detailed fabrication instructions and Digital Twin capabilities shared and updatable by stakeholders.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/bim-forum-fundamental-definitions-and-connection-to-aia-lod-level-of-development-lod-100-500/178351/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/bim-forum-fundamental-definitions-and-connection-to-aia-lod-level-of-development-lod-100-500/178351.png","ImageObject",442,249,{"name":88,"@type":89},"Lucas Vance","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/vnd.openxmlformats-officedocument.wordprocessingml.document","2026-10-20","2026-09-02",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",10,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"What does LOD 100 specify for a modeled element in the BIM model?","Question",{"text":109,"@type":110},"The element is represented graphically using a symbol, database-derived data, or generic representation. Size, shape, and orientation cannot be reliably derived from the model, though some agency asset information requirements may be included without analysis.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"What additional capabilities are introduced at LOD 200 and LOD 300?",{"text":114,"@type":110},"LOD 200 allows direct derivation of size, shape, and orientation in the XY plane with minimal need for plan notes or dimensions, and may include analysis. LOD 300 extends to the XY and Z plane, enabling derivation of interfaces with other objects and includes the agency’s asset information requirements with analysis to the standard of care.",{"name":116,"@type":107,"acceptedAnswer":117},"How does LOD 500 support the Digital Twin and stakeholder use?",{"text":118,"@type":110},"LOD 500 enables direct derivation of interfaces and fabrication instructions, positioning the model as the Digital Twin of the constructed asset. Major transportation asset class attributes are linked to modeled elements, and modeled objects/assets are usable and updatable by all stakeholders.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},178351,1791386792,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":50,"category_name":51,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":9,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":4},549768064622,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","BIM Forum Fundamental Definitions and connection to AIA LOD\nFUNDAMENTAL LOD DEFINITIONS\nLOD 100\nJTCEES:  The modeled element is graphically represented in the model with a symbol, derived from a database, or other generic representation.  Size, shape and orientation cannot be derived reliably from the model.  Some of the agency’s asset information requirements may be included in the element and does not include analysis.\nLOD 200\nJTCEES:  The modeled element is graphically represented within the model as a specific system in the XY plane. Size, shape, and orientation can be derived directly from the modeled element in two dimensions with minimal need for plan sheet notes or dimensions.  Some of the agency’s asset information requirement are included in the element and may include analysis.\nLOD 300\nJTCEES:  The modeled element is graphically represented within the model as a specific system in the XY and Z plane.  Size, shape, orientation, and interfaces with other objects can be derived directly from the modeled element without the need for plan sheet notes or dimensions. The agency’s asset information requirements are included for the element and includes analysis to the standard of care for that element.\nLOD 350\nJTCEES:\nNot included and concept of interfaces and other building systems added to 300.\nLOD 400\nJTCEES:  The modeled element is graphically represented within the model as a specific system in the XY and Z plane. Size, shape, orientation, interfaces with other objects, means and methods, and fabrication instructions can be derived directly from the modeled element which includes sub-elements.  The agency’s asset information requirements are included for the element.\nLOD 500\nJTCEES:\nThe modeled element is graphically represented within the model as a specific system in the XY and Z plane.  Size, shape, orientation, interfaces with other objects, and fabrication instructions can be derived directly from the modeled element. This represents the Digital Twin of the constructed asset.  Major transportation asset class attributes are linked to the modeled elements.  Modeled objects or assets are useable and updatable by all stakeholders.","cbCaijz80MXryI9U","https://ap.wps.com/l/cbCaijz80MXryI9U","docx",27916,"English","# Fundamental LOD Definitions\n## LOD 100\n## LOD 200\n## LOD 300\n## LOD 350\n## LOD 400\n## LOD 500","[{\"question\":\"What does LOD 100 specify for a modeled element in the BIM model?\",\"answer\":\"The element is represented graphically using a symbol, database-derived data, or generic representation. Size, shape, and orientation cannot be reliably derived from the model, though some agency asset information requirements may be included without analysis.\"},{\"question\":\"What additional capabilities are introduced at LOD 200 and LOD 300?\",\"answer\":\"LOD 200 allows direct derivation of size, shape, and orientation in the XY plane with minimal need for plan notes or dimensions, and may include analysis. LOD 300 extends to the XY and Z plane, enabling derivation of interfaces with other objects and includes the agency’s asset information requirements with analysis to the standard of care.\"},{\"question\":\"How does LOD 500 support the Digital Twin and stakeholder use?\",\"answer\":\"LOD 500 enables direct derivation of interfaces and fabrication instructions, positioning the model as the Digital Twin of the constructed asset. Major transportation asset class attributes are linked to modeled elements, and modeled objects/assets are usable and updatable by all stakeholders.\"}]","BIM Forum Fundamental Definitions and connection to AIA LOD - Level of Development (LOD) 100-500 | DOCX",1788331431]