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The handbook explains how LOD clarifies authorship responsibilities in Model Element Authoring (MEA) schedules and BIM execution plans, and how associated non-geometric information can progress alongside geometry. It details LOD notations, distinguishes LOD from level of detail, and describes key LOD aspects: graphical models, documentation, and non-graphical information. It also outlines LOD 500 field-verification context and guidance on pragmatic field verification and AIR.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/nz-bim-handbook-appendix-lod-definitions-april-19/648293/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/nz-bim-handbook-appendix-lod-definitions-april-19/648293.png","ImageObject",300,407,{"name":92,"@type":93},"Pentious","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the main purpose of LOD in BIM model development?","Question",{"text":112,"@type":113},"LOD provides a scale showing how reliable the information expected for specific model elements is at each stage of development, clarifying authorship responsibilities and what others can rely on for decision-making.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does LOD differ from level of detail?",{"text":117,"@type":113},"Level of detail describes how much information is included, while level of development describes how far the element’s geometry and attached information have been thought through and can be relied upon as an output.",{"name":119,"@type":110,"acceptedAnswer":120},"What does LOD 500 focus on, and how should projects handle it?",{"text":121,"@type":113},"LOD 500 is the field-verified representation for size, shape, location, quantity, and orientation, with possible attached non-graphic information. The handbook advises pragmatic selection of which information fields and verification processes to supply, and highlights that progression can jump from LOD 300 to LOD 500 when higher intermediate LOD requirements aren’t needed.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},648293,1793029938,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},1374404730887,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Table of contents  \n1. LOD overview 3  \n\n| 2. Level of development (LOD) versus level of detail 4 |\n| --- |\n| 3. LOD notations 4 |\n| 4. Aspects of LOD 4 |\n| 5. LOD definitions 5 |\n| 6. Discontinuous progression 5 |\n\nLevel of development   \n1. LOD overview  \nLevel of Development (LOD) is a scale used to show the reliability of content that is expected to be included for specific model elements at different times during model development. The main purpose of LOD, when incorporated in Model Element Authoring (MEA) schedules and BIM execution plans, is to clarify what each member of a design/construction team is required to author in their models, at each stage, and to what extent others can rely on them.  \nCritically, as the LOD progresses, other information associated to those elements can also progress, not just the geometry.  \nLOD is a means of defining the extent to which a model element has been developed, from conception in the mind of the designer, through to its construction and operation. It represents the extent to which information about an element can be relied on for decision-making purposes, at a particular point in time.  \nLOD applies to elements within a model – not the overall model.  \nProject models at any stage of delivery will invariably contain elements at various levels of development.  \nThis updated version of the handbook includes the distinction of LOD 500 from the BIMForum LOD Specification, their words:  \nLOD 500 – The model element is afield-verified representation of size, shape, location, quantity, and orientation. Non-graphic information may also attach to the model elements.  \nSince LOD 500 relates to field verification, and doesn’t indicate a progression to a higher level of model element geometry or non-graphic information, this [LOD] specification does not define or illustrate it.  \nBecause LOD 500 relates to As-Built and operational purposes, the information contained within these building elements becomes increasingly important. The relevance of information fields differs from project to project. Take a pragmatic approach when choosing which fields of information must be supplied and how they tie back to the building elements.  \nTo achieve field verification, LOD progression can jump immediately from LOD 300 to LOD 500, if there isn’t a project requirement to achieve LOD 350 or LOD 400 from the project team.  \nNot all building elements need field verification. But when they do employ, quality, visual or measured verifications. An in-depth discussion with the client and their asset management and operational teams is critical to ascertain which geometrical elements, information fields, and verification process are required for the project. Ideally, this is captured in the Asset Information Requirements (AIR) at the outset of the project. A retrofit approach late in the project may trigger rework, additional cost, and delay the handover deliverable.  \n2. Level of development (LOD) versus level of detail  \nLOD is sometimes misinterpreted as level of detail rather than level of development. However, there are important differences. Level of detail is essentially how much detail is included in the model element. Level of development is the degree to which the element’s geometry and attached information has been thought through – the degree to which project team members can rely on the information when using the model. In essence, level of detail can be considered as an input to the element, while level of development is reliable output.  \n3. LOD notations  \nLOD notations generally comprise numbers at intervals to give users of the system the flexibility to define intermediate LODs. LOD 350 is identified as a higher level of detailed coordination between disciplines – higher than LOD 300, but not as high as LOD 400. Defining additional LODs can be crucial in some circumstances, particularly for contractual reasons – e.g. the handover of models from the design team to the construction team.  \n4. Aspe","cbCaimnBAngJAT1p","https://ap.wps.com/l/cbCaimnBAngJAT1p","pdf",574965,"English","# LOD overview\n# Level of development (LOD) versus level of detail\n# LOD notations\n# Aspects of LOD\n# LOD definitions\n# Discontinuous progression","[{\"question\":\"What is the main purpose of LOD in BIM model development?\",\"answer\":\"LOD provides a scale showing how reliable the information expected for specific model elements is at each stage of development, clarifying authorship responsibilities and what others can rely on for decision-making.\"},{\"question\":\"How does LOD differ from level of detail?\",\"answer\":\"Level of detail describes how much information is included, while level of development describes how far the element’s geometry and attached information have been thought through and can be relied upon as an output.\"},{\"question\":\"What does LOD 500 focus on, and how should projects handle it?\",\"answer\":\"LOD 500 is the field-verified representation for size, shape, location, quantity, and orientation, with possible attached non-graphic information. The handbook advises pragmatic selection of which information fields and verification processes to supply, and highlights that progression can jump from LOD 300 to LOD 500 when higher intermediate LOD requirements aren’t needed.\"}]","NZ-BIM-Handbook-Appendix - LOD Definitions - April 19 | PDF",1792792990,15]