{"id":683882,"date":"2020-01-06T08:00:46","date_gmt":"2020-01-06T16:00:46","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=683882"},"modified":"2020-01-06T10:05:43","modified_gmt":"2020-01-06T18:05:43","slug":"common-patterns-for-bim-and-gis-integration","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/transportation\/common-patterns-for-bim-and-gis-integration","title":{"rendered":"Common Patterns for BIM and GIS Integration"},"author":6531,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[23771,22871,23351],"tags":[],"industry":[],"product":[36561],"class_list":["post-683882","blog","type-blog","status-publish","format-standard","hentry","category-3d-gis","category-state-government","category-transportation","product-arcgis-pro"],"acf":{"short_description":"Organizations use multiple patterns of integrating GIS and BIM data to bring together context, design, and construction.","flexible_content":[{"acf_fc_layout":"content","content":"<p><em>Summary: The massive amount of global construction anticipated to happen in the next 50 years is driving nearly every country to ask how we can positively change the world efficiently and sustainably while meeting societal requirements.\u00a0 Meeting our societal needs will only happen by applying real-world context from GIS with BIM design and construction data to new processes for assessing impact and predicting outcomes.<\/em><\/p>\n"},{"acf_fc_layout":"content","content":"<p>For the Engineering Summit at the 2019 Esri International User Conference, I was asked to give a plenary talk. Given the high caliber of speakers and presentations that I knew we\u2019d be seeing from teams from GHD, HNTB, and many more, this was a tall challenge. After all, the experts in BIM and CAD integration with GIS are our users and partners. Our development effort and business activities such as our partnership with Autodesk are in direct response to user need, customer interest, market trends, and even legislative demand around the world.<\/p>\n<p>The massive amount of global construction anticipated to happen in the next 50 years is driving nearly every country to ask how we can positively change the world efficiently and sustainably while meeting societal requirements.\u00a0 Most of this construction to support urbanization, human habitation requirements, transportation, and climate change mitigation will be driven by Building Information Modeling (BIM) processes.\u00a0 We are seeing increasing legislative demand to enforce the use of environmental and existing asset context in design and construction projects.\u00a0 Our users and the data that they create will provide essential information and analysis about the impact and expected outcomes of all this new construction.\u00a0 Meeting our societal needs will only happen by applying real-world context from GIS with BIM design and construction data to new processes for assessing impact and predicting outcomes.<\/p>\n<h3>Drivers for integration<\/h3>\n<p>Since my early career as a software developer and now as a product manager, I have been deeply involved in efforts focused on the exchange of information between the design and construction world and the back office.\u00a0 In these projects, the essential drivers for combining BIM and GIS data have nearly always been the same:<\/p>\n<ul>\n<li>Provisioning of design and construction teams with geospatial information for context that provides an understanding of initial conditions to help achieve reliable outcomes more efficiently and quickly<\/li>\n<li>Use of design and construction data in geospatial workflows for more accurate and more efficient planning, operation, performance evaluation, maintenance, and emergency response<\/li>\n<li>Situational awareness within projects or systems of assets to achieve common understanding and communication of status at any point in design, construction, or operation<\/li>\n<\/ul>\n<h2>Patterns for data interchange<\/h2>\n<p>Patterns of data interchange between the GIS and BIM worlds have evolved over time, yet retain fundamental characteristics driven more by business process and need, rather than by technology.\u00a0 All integration patterns have value and none of them are perfect.\u00a0 The complexity of the business need coupled with drastic continuous change in technology has meant that there has not been one data integration pattern or technique that clearly overcomes all others forever.<\/p>\n<p>The basic patterns that we see can be summed up as follows:<\/p>\n<ul>\n<li>Extract-Translate-Load (ETL)<\/li>\n<li>BIM as 3D graphics<\/li>\n<li>Web-to-web client integration<\/li>\n<li>Extract-Load-Translate (ELT) \u2013 Seamless reuse<\/li>\n<li>Standards-based ETL<\/li>\n<li>The Standards-based Common Data Environment (CDE)<\/li>\n<\/ul>\n<p>In this article, I\u2019ll discuss the first four in detail and touch on Standards-based ETL and the CDE pattern briefly, leaving these for future articles.<\/p>\n<h2>Extract-Translate-Load (ETL)<\/h2>\n<p>ETL is a classic integration pattern used around the world.\u00a0 In ETL, specific data are mapped from one known schema or format into another known schema or format.\u00a0 The process starts with \u2018extraction\u2019 in which an application or system queries the source database or data, find the specific content that is needed, and stores it outside the source, typically on the same system or possibly on some intermediary system.<\/p>\n<p>After extraction, data are typically \u2018translated\u2019 (some, including Safe Software and the Pragmatic Institute say \u2018transformed\u2019 because it\u2019s often more than just dictionary changes) into some other schema that may involve removing missing data, converting variable formats, or even converting information into a different encoding.\u00a0 Finally, the data are \u2018loaded\u2019 into the destination system.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":684112,"id":684112,"title":"George Bush Intercontinental Airport","filename":"Houston.png","filesize":221678,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/transportation\/common-patterns-for-bim-and-gis-integration\/houston-2","alt":"George Bush Intercontinental Airport","author":"6531","description":"An early example of George Bush Intercontinental Airport, Houston converted to 3D Object scene layers (courtesy Houston Airports)","caption":"An early example of George Bush Intercontinental Airport, Houston converted to 3D Object scene layers (courtesy Houston Airports)","name":"houston-2","status":"inherit","uploaded_to":683882,"date":"2019-12-18 06:13:23","modified":"2019-12-18 06:16:13","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1920,"height":1080,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston.png","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston.png","medium_large-width":768,"medium_large-height":432,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston.png","large-width":1920,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston-1536x864.png","1536x1536-width":1536,"1536x1536-height":864,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston.png","2048x2048-width":1920,"2048x2048-height":1080,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston-826x465.png","card_image-width":826,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/Houston.png","wide_image-width":1920,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<h3>Pros<\/h3>\n<p>ETL implementation is accessible to developers and configurators who can apply practical problem solving, data architecture, and programming skills to connect disparate formats and produce valuable reports and analyses. ETL solutions are flexible in that they can be tailored on a case-by-case basis to address specific data types and domain problems.<\/p>\n<h3>Cons\/Challenges<\/h3>\n<p>ETL implementations can require ongoing maintenance as business needs and file formats change, creating technical debt that can be costly to the business and difficult to scale. \u00a0ETL necessitates changing data from one state to another and often results in data loss.\u00a0 ETL systems can have difficulty maintaining bidirectional relationships, especially in cases where data resolution is significantly different from one system to another.<\/p>\n<h3>How Esri supports BIM-GIS workflows with ETL<\/h3>\n<p>Many Esri customers use tools such as <a href=\"https:\/\/www.safe.com\/\">Safe Software\u2019s FME<\/a> or the <a href=\"https:\/\/desktop.arcgis.com\/en\/arcmap\/latest\/extensions\/data-interoperability\/what-is-the-data-interoperability-extension-.htm\">ArcGIS Data Interoperability Extension<\/a> to bridge between diverse formats and specifications.\u00a0 One common application in the BIM-GIS conversation is to exchange data between <a href=\"https:\/\/technical.buildingsmart.org\/\">buildingSmart International\u2019s Industry Foundation Classes (IFC)<\/a> and asset data in GIS. ETL processes will be required for years to come and the ETL pattern is a <a href=\"https:\/\/medium.com\/datadriveninvestor\/understanding-extract-transform-and-load-etl-and-its-necessity-in-data-analytics-world-with-an-64346016153d\">key enabler of related markets and technologies, such as Data Science applications<\/a>.\u00a0 As the BIM market evolves, it\u2019s likely that ETL will become more prevalent over time, not less.<\/p>\n<h2>BIM as 3D graphics<\/h2>\n<p>High end 3D visuals are becoming expected by customers in many GIS-related domains and this need is becoming acute when merging GIS with architectural or civil engineering projects.\u00a0 For years, architects have been able to generate high quality 3D renderings of projects, producing increasingly realistic renderings of structures long before they exist in the real world.\u00a0 In today\u2019s market, game engine technology has opened up virtual reality (VR) as a user experience that enables immersive review, approval, and even commissioning and training workflows to happen with realistic digital representations of buildings and structures.\u00a0 Whether for realism or for information, many of these projects often require geospatial context to be used as part of the visualization.<\/p>\n<p>A common emerging workflow that helps bring together 3D BIM content with GIS requires converting the BIM models into common 3D graphics file formats that are consumed in applications such as Trimble SketchUp, ArcGIS Pro, and Unreal Engine. These projects result in compelling visual experiences that help stakeholders understand how a structure will interact with the surrounding environment.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":684182,"id":684182,"title":"CityEngine in Unreal Engine","filename":"CEGE.jpg","filesize":314456,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/transportation\/common-patterns-for-bim-and-gis-integration\/cege","alt":"CityEngine content in Unreal Engine","author":"6531","description":"A CityEngine project rendered in Unreal Engine","caption":"A CityEngine project rendered in Unreal Engine","name":"cege","status":"inherit","uploaded_to":683882,"date":"2019-12-18 06:50:37","modified":"2019-12-18 06:51:11","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1920,"height":1080,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE.jpg","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE.jpg","medium_large-width":768,"medium_large-height":432,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE.jpg","large-width":1920,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE-1536x864.jpg","1536x1536-width":1536,"1536x1536-height":864,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE.jpg","2048x2048-width":1920,"2048x2048-height":1080,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE-826x465.jpg","card_image-width":826,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/CEGE.jpg","wide_image-width":1920,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":"https:\/\/www.unrealengine.com\/en-US\/spotlights\/unreal-studio-brings-cityengine-neighborhood-to-life"},{"acf_fc_layout":"content","content":"<h3>Pros<\/h3>\n<p>In many cases, representing BIM as 3D graphics is a quick, effective technique for producing good quality visualizations for presentations and stakeholder review.\u00a0 As workflows using game engines and VR become more prevalent, there is greater need to aggregate 3D content in tools that can be used to create user-friendly experiences.\u00a0 We\u2019re also seeing emerging standards for sharing simple 3D models, such as glTF, become more standard across software tools.<\/p>\n<h3>Cons\/Challenges<\/h3>\n<p>Almost without exception, converting an information rich asset from BIM or GIS into a 3D model format used for game engines and graphics tools will result in loss of attribution and metadata.\u00a0 As a result, some customers will feel that 3D graphics conversion workflows are one directional and of limited value.\u00a0 For these asset formats that typically do not have support for coordinate systems or geospatial coordinates, georeferencing information is stored externally from the model and may be lost during format conversion processes.<\/p>\n<p>Sometimes, we find that a model that was created as separate parts in a BIM application will be fused into a monolithic single 3D model that won\u2019t perform well when displayed in a GIS.\u00a0 Today, many GIS tools will also struggle to display assets with textures or materials that reflect the source content, though this problem is gradually diminishing as GIS vendors, including Esri, increase the visual quality of their application output.<\/p>\n<p>Finally, one of the critical issues of the approach using BIM as generic 3D models is that, for many end users, \u2018seeing is believing.\u2019 Because it\u2019s somewhat easy to bring a model into GIS and make it look good doesn\u2019t mean that it is easy to bring along asset metadata and attributes using that same pathway.<\/p>\n<h3>How Esri supports the BIM as 3D Graphics approach<\/h3>\n<p>Despite some of the limitations of this approach, Esri enables the use of BIM data as 3D graphics, especially to help customers use data in emerging workflows involving game engines, XR experiences, and other applications that focus more on visuals than analytics. The Esri CityEngine team was one of the first non-Epic Games teams to provide a <a href=\"https:\/\/docs.unrealengine.com\/en-US\/Engine\/Content\/Importing\/Datasmith\/index.html\">Datasmith workflow to streamline 3D graphics content into Unreal Engine<\/a>.\u00a0 The CityEngine team uses this to support a VR template project that is available on the UE4 Marketplace.<\/p>\n<p>Esri 3D teams have also been looking closely at glTF.\u00a0 glTF is now directly supported as a marker symbol in ArcGIS desktop and web applications and we are basing some of our upcoming materials spec around the glTF and Universal Scene Description material implementations.<\/p>\n<p>Beyond these early stage features, we\u2019re also exploring more direct game engine integration with popular engines such as Unity and Unreal Engine.<\/p>\n<h2>Web-to-web client integration<\/h2>\n<p>One of the highest value, yet most subtly difficult, integration patterns that we encounter is the concept of combining web interfaces across multiple systems to provide a common portal or dashboard into spatial, design, and performance data associated with real world assets. Fundamentally, this pattern holds the promise of merging the power of GIS as a communication tool with design and construction data that can inform project communication, smart city operations, and asset management.<\/p>\n<p>I started putting maps on the internet in the late 1990s and a map view into asset management and design data became a common theme in projects and product efforts that I worked on.\u00a0 We have seen numerous customers and partners use Esri web tools including story maps, Web AppBuilder, and custom JavaScript applications to link to systems such as Autodesk\u2019s BIM 360 and show end users their project or asset data and GIS data in a single experience.\u00a0 Customers ask us repeatedly for a single product that enables this workflow.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":684202,"id":684202,"title":"dubai_web2","filename":"dubai_web2.jpg","filesize":167316,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/transportation\/common-patterns-for-bim-and-gis-integration\/dubai_web2","alt":"Dubai Digital Submission Prototype","author":"6531","description":"Prototype BIM submission project integrating ArcGIS and BIM 360 created for Dubai by Esri and MG","caption":"Prototype BIM submission project integrating ArcGIS and BIM 360 created for Dubai by Esri and MG","name":"dubai_web2","status":"inherit","uploaded_to":683882,"date":"2019-12-18 06:57:43","modified":"2019-12-18 06:58:03","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1533,"height":927,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","medium-width":432,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","medium_large-width":768,"medium_large-height":464,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","large-width":1533,"large-height":927,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","1536x1536-width":1533,"1536x1536-height":927,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","2048x2048-width":1533,"2048x2048-height":927,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2-769x465.jpg","card_image-width":769,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/dubai_web2.jpg","wide_image-width":1533,"wide_image-height":927}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<p>The complexity lies in the unique value that each version of a workflow that this type of integration enables for end users.\u00a0 BIM program managers, facility managers, and city operations managers may all need to integrate design data with GIS, yet their fundamental business drivers are different.\u00a0 There isn\u2019t one interface to satisfy them all.\u00a0 That said, working with partners, we have built several versions of this integration and we are working on providing a set of tools to allow anyone to build out the experience they need using ArcGIS and our partners web integration tools and capabilities.<\/p>\n<h3>Pros<\/h3>\n<p>One of the most appealing aspects of the web-based integration experience is that it is typically designed with the end-user in mind.\u00a0 Each experience implements a tailored workflow to show diverse information such as project cost and schedule status, live asset performance indicators, or worker order status, for example.\u00a0 The user experience is designed to allow users in a web browser to access the information they need when they need it.<\/p>\n<p>Our industry has evolved common techniques and tools that make building web-based integrations accessible to web developers who may not be BIM or GIS experts. Using standard development experiences, developers need to only know where the data is, how to link it together, and how to authenticate into different systems.<\/p>\n<p>Perhaps most importantly, the web-to-web client integration pattern respects \u2018system of record\u2019 source of content.\u00a0 The user may be exploring a map served by ArcGIS Online and, upon clicking through an asset and investigating attribute data, may link directly to information in a BIM repository, such as BIM 360.<\/p>\n<h3>Cons\/Challenges<\/h3>\n<p>Despite how simple it may seem to bring together GIS and BIM on the web, there are some common hurdles that can stump even sophisticated developers.\u00a0 In the market today, there is no common indexing scheme or standard interface that allows GIS to be automatically indexed to BIM information, requiring per-owner-operator or per-project indexing patterns.<\/p>\n<p>Commercially developed content repositories, common in today\u2019s market because of the expense of hosting and providing content management tools for massive quantities of data, are typically not co-developed by multiple vendors.\u00a0 Different vendors will implement different authentication patterns and interface technologies.<\/p>\n<p>At the domain level, patterns of data ownership, update, and maintenance drive inconsistencies that require complex data synchronization and extraction patterns.\u00a0 BIM design data, during project inception and construction, will change regularly.\u00a0 Linking to constantly changing data from a record keeping application that has scheduled legal dependencies may be problematic.\u00a0 Many times, data required to solve a specific problem will not be in either the BIM or the GIS and must be sourced from yet another application system with its own idiosyncrasies.<\/p>\n<p>Just about anyone can create a web page showing project information, but making that web page useful or sustainable can be substantially complex.<\/p>\n<h3>How Esri supports easier web-to-web client integration<\/h3>\n<p>ArcGIS has provided tools to build custom web applications, including industry-standard integration tools, for decades.\u00a0 The <a href=\"https:\/\/developers.arcgis.com\/javascript\/\">ArcGIS API for JavaScript<\/a> enables extensive customization of 2D and 3D web experiences.\u00a0 Tools such as <a href=\"https:\/\/www.esri.com\/en-us\/arcgis\/products\/web-appbuilder\/overview\">Web AppBuilder<\/a> and the new <a href=\"https:\/\/www.esri.com\/en-us\/arcgis\/products\/arcgis-experience-builder\/overview\">ArcGIS Experience Builder<\/a>, currently in Beta, enable users to create tailored web workflows through configuration.<\/p>\n<p>Esri also provides extensive open access to content managed in ArcGIS Online and ArcGIS Enterprise through GeoREST services that encompass data types (layers), analysis (geoprocessing), and content management capability.\u00a0 The new I3S Building Scene Layer is a great example of how we have even introduced new layers and capabilities in ArcGIS specifically for sharing BIM content over the web.<\/p>\n<p>We also have created several versions of custom web apps that bring together BIM and GIS.\u00a0 Currently, these are bespoke and not productized.\u00a0 We have provided sample code to help some partners create their own integration apps and we are exploring how we can create a solution or product that encapsulates the range of our customers\u2019 needs while also preserving flexibility and configurability.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":684212,"id":684212,"title":"TurangaLibraryChristchurch","filename":"TurangaLibraryChristchurch.jpg","filesize":306686,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/transportation\/common-patterns-for-bim-and-gis-integration\/turangalibrarychristchurch","alt":"Turanga Library, Christchurch, NZ","author":"6531","description":"Turanga Library, Christchurch, NZ shown as an I3S Building Scene Layer in a web app","caption":"Turanga Library, Christchurch, NZ shown as an I3S Building Scene Layer in a web app","name":"turangalibrarychristchurch","status":"inherit","uploaded_to":683882,"date":"2019-12-18 07:00:45","modified":"2019-12-18 07:01:23","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1920,"height":1080,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch.jpg","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch.jpg","medium_large-width":768,"medium_large-height":432,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch.jpg","large-width":1920,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch-1536x864.jpg","1536x1536-width":1536,"1536x1536-height":864,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch.jpg","2048x2048-width":1920,"2048x2048-height":1080,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch-826x465.jpg","card_image-width":826,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/TurangaLibraryChristchurch.jpg","wide_image-width":1920,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<h2>Extract-Load-Translate (ELT) \u2013 Seamless reuse<\/h2>\n<p>In the last few years, we\u2019ve seen another pattern of integration start to emerge. The ubiquity of storage and rapidly improving capability to read more and more content with standard APIs has allowed some applications to open and read content from a source and then to wait to translate that data for use as native content in the destination application.\u00a0 Data may be directly read from source files or services in their native location or data may be copied, then loaded and translated.\u00a0 In general, these \u2018Extract-Load-Translate\u2019 patterns are changing integration from perpetual data loss to opportunistic data reuse.<\/p>\n<p>One example of the ELT pattern is the CAD and Revit file reading capability in ArcGIS Pro.\u00a0 Files can stay in a source file share or be copied to a new location and read directly by Pro.\u00a0 Pro reads the source data and dynamically interprets it as if it is a collection of GIS feature services without changing the source file.\u00a0 From that state, a user may choose to convert the data to another format, such as the I3S Building Scene Layer for dynamic streaming over the web.<\/p>\n<p>At a more sophisticated level, the ELT pattern is a key component of data lakes.\u00a0 If data can be snapshotted (extracted) and then moved to a new curated location (loaded), then at any time it can be read to the best ability of destination software systems (translated).\u00a0 Over time, the expectations are that the quantity of data will grow, the quality of data will improve, and the ability to read and use data for new purposes will improve.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":684232,"id":684232,"title":"ArcGIS for AutoCAD","filename":"ArcGIS-for-AutoCAD.jpg","filesize":325456,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD.jpg","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-pro\/transportation\/common-patterns-for-bim-and-gis-integration\/arcgis-for-autocad","alt":"ArcGIS for AutoCAD","author":"6531","description":"ArcGIS for AutoCAD allows direct reading of GIS data","caption":"ArcGIS for AutoCAD allows direct reading of GIS data","name":"arcgis-for-autocad","status":"inherit","uploaded_to":683882,"date":"2019-12-18 07:07:31","modified":"2019-12-18 07:08:04","menu_order":0,"mime_type":"image\/jpeg","type":"image","subtype":"jpeg","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1920,"height":1080,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD-213x200.jpg","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD.jpg","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD.jpg","medium_large-width":768,"medium_large-height":432,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD.jpg","large-width":1920,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD-1536x864.jpg","1536x1536-width":1536,"1536x1536-height":864,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD.jpg","2048x2048-width":1920,"2048x2048-height":1080,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD-826x465.jpg","card_image-width":826,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/ArcGIS-for-AutoCAD.jpg","wide_image-width":1920,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":"<h3>Pros of ELT workflows<\/h3>\n<p>ELT workflows are highly desirable to end users because they often hide schema conversion and appear to almost magically allow access and use of data in new applications or systems. Content may appear to be native to the destination, such as in the case of Revit files appearing as GIS feature layers in ArcGIS Pro. ELT enables progressive improved use of source information over time. As ArcGIS Pro is improved to read Revit content, more and more use can be made of the source data with minimal additional work (if any) by the end user.<\/p>\n<p>Depending on implementation, ELT has the potential to respect, or at least preserve relationships back to, the system of record for source content. ELT also facilitates bidirectional workflows through conservation of metadata and data semantics.<\/p>\n<h3>Cons\/Challenges<\/h3>\n<p>Bad data in is not easily able to be overcome and this can be extra painful for users working with ELT technologies because the user experience can appear to be automatic, until it is not. Missing metadata, bad geometry, and old or nonstandard content can cause ELT workflows to fail or underperform. One standout example with Revit content is the common lack of survey point information without which it is nearly impossible to automatically geolocate projects.<\/p>\n<p>ELT requires extensive access to source content which may not be possible with proprietary data sources. ELT also requires extensive knowledge of the source domain and can lead to misperceptions that destination applications can operate on content as well as the native applications that created the content. This will not always be so, especially in cases where extensive parametric or dynamically derived geometry or calculated attributes must be materialized or frozen in destination software tools. ELT is the highest cost capability to create partly because it provides the best end-user experience.<\/p>\n<p>When combining BIM and GIS data, ELT requires program-level BIM specifications to be able to consistently reuse BIM content in applications such as GIS. A GIS can\u2019t magically add the right level information or asset IDs that might be needed for a BIM model to be most useful for asset management after construction. The diversity of AEC and BIM content from the many organizations in the market makes it unlikely that Esri will be able to support ELT workflows for every vendor software or open format. We will have to pick market-dominant formats with solid implementation and rely on other integration workflows to meet the needs of some formats and specifications.<\/p>\n<h3>How we plan to support ELT workflows<\/h3>\n<p>Esri has been leading the way with ELT workflows for years. ArcGIS for AutoCAD has enabled the direct read of GIS content into Autodesk AutoCAD since 2007. The <a href=\"https:\/\/www.autodesk.com\/campaigns\/bim-gis\">Autodesk Connectors for ArcGIS<\/a> bring a similar direct read workflow of GIS into Autodesk Infraworks and Autodesk Civil 3D.<\/p>\n<p>ArcGIS Pro introduced direct read of Autodesk Revit in 2018 and since then we\u2019ve seen remarkable examples of BIM used in GIS workflows which was accelerated when we also introduced the Building Scene Layer in 2019. These capabilities are an example of combining integration workflows to enable entirely new workflows.<\/p>\n<p>For the future, we are planning to implement direct read of additional data types such as Autodesk Civil 3D and IFC. Beyond that we are also working on direct connectivity with content management systems, such as Autodesk\u2019s BIM 360. We will examine support for additional vendor and industry formats based on future availability of APIs or SDKs that facilitate easier access.<\/p>\n<h2>And there\u2019s more&#8230;<\/h2>\n<h3>Standards-based ETL<\/h3>\n<p>There are other patterns of integration that we see evolving in the industry. One of them is the concept that all information exchange should happen through Standards. This includes specifications such as the Open Geospatial Consortium\u2019s CityGML and IFC. This can be challenging when the standards were created for separate industries and workflows and only later attempted to be glued together. Converting data from one standard to another has similar issues to classic ETL workflows, resulting in data loss because of missing domain or discipline information and mismatch in graphic complexity. Data loss can be magnified when converting out of one vendor format, through multiple open standard formats, and then into another vendor format.<\/p>\n<p>Given the need to evolve software and standards rapidly to meet changing market expectation and technology capability, it\u2019s hard to see that this pattern is going to be able to stabilize in a manner that consistently minimizes data loss for most cross-industry applications of BIM and GIS integration. Esri typically supports these patterns by making use of third-party libraries and tools to read open standard data. Whenever possible, we hope to simplify the number of hops in data conversion by looking at ELT workflows and tools, such as by directly reading IFC into ArcGIS in the future.<\/p>\n<h3>The Standards-based Common Data Environment (CDE)<\/h3>\n<p>Another trend we see is the attempt to create a single Common Data Environment (CDE) based upon one industry\u2019s specifications or open standards. I\u2019ve, personally, been involved in data centralization and federation projects going back to the late 90\u2019s. The centralized database approach always seems to struggle with issues of data ownership, ability to meet organization change requirements, and legal constraints. As I pointed out in my previous blog, for example, a geodatabase is an unlikely place for stamped and certified engineering drawings.<\/p>\n<p>Cory Dippold, Vice President at Mott MacDonald, and others in the industry instead like to rephrase the term CDE to refer to a \u201cConnected Data Environment\u201d in which federated data remains under control of its appropriate domain owner in an organization and is exposed through standard services for integration and cross-domain access. I strongly support this concept and form of implementation as the most practical way forward for integrating data from multiple domains, agencies, and workflows across our large customers.<\/p>\n<p>Many people naively perceive cities such as New York City, London, or San Francisco as monolithic hierarchical entities that roll all responsibility up into one officer or elected official. Large cities and conurbations are actually highly complex with multiple departments and dependencies, some of which may not be under the purview of the city exclusively. The Port Authority of New York and New Jersey is a great example of this type of organization. As an interstate agency, it exists outside the direct authority of New York City, yet the Port Authority\u2019s influence on the City\u2019s infrastructure, mobility, and quality of life is immense. The only way to combine data from the Port Authority with the City will be through secure, controlled services federated across multiple agencies and departments and exposed to appropriate staff and service providers to effect positive change and provide rapid response to events in the City and its environs.<\/p>\n<p>We do understand that some customers will continue to build toward singular CDE\u2019s for both project delivery and asset management at the city scale. ArcGIS tools work in both circumstances and we will likely discuss this in a later blog article.<\/p>\n<h3>Conclusion<\/h3>\n<p>The diversity of integration patterns for BIM and GIS data has increased, not decreased, over time. Newer integration patterns, such as ELT, potentially improve user experience and preserve data integrity, but require deeper knowledge of diverse domains such as GIS, architectural design, construction documentation, and asset management. Software vendors are focused on building tools to enable customers to accomplish work and are often not broad experts on the work itself. We are constantly working to improve tools and workflows to enable our customers to get more of their work done, faster, and cost effectively. This requires iterative tool development with continuous feedback and understanding that complexity isn\u2019t untangled with a new button on an interface.<\/p>\n<p>We are also experiencing a time of tremendous change across every technical human domain. Ever increasing volumes of data, transition to more sophisticated modeling and simulation of reality, and machine learning and artificial intelligence are changing our work process and even the quality of our work faster than ever before. This means that our tools and abilities to access data are going to have to change even faster. While I don\u2019t expect that we will be able to provide a single magic technology or data format to instantly expose all the data that an organization will ever need, better understanding of the patterns of data use and integration will help us to respond faster to change and even enable change more positively.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" style=\"background: none;border: 0px\" src=\"http:\/\/bit.ly\/2019DecBIMGISCounter\" alt=\"\" width=\"1\" height=\"1\" \/><\/p>\n"}],"authors":[{"ID":6531,"user_firstname":"Chris","user_lastname":"Andrews","nickname":"Chris Andrews","user_nicename":"candrewsesri","display_name":"Chris Andrews","user_email":"CAndrews@esri.com","user_url":"","user_registered":"2018-03-02 00:18:31","user_description":"Chris Andrews is an experienced product management and technology leader who enjoys solving real world problems, establishing high performance teams, and connecting people and businesses in positive collaborations. Chris started off at Esri as the senior product manager for 3D across the ArcGIS platform, based in Southern California. Chris now leads a team of product managers with responsibility for ArcGIS Hub, ArcGIS Excalibur, 3D, ArcGIS Urban, AEC\/CAD\/BIM offerings, ArcGIS Business Analyst and more. Before Esri, Chris was the lead product manager for Autodesk\u2019s Infrastructure Modeler (now InfraWorks) and Digital Cities efforts and was previously in the enterprise integration industry focused on CAD-GIS integration.  Chris has focused on strategic innovation, defining and driving to production new products at top tier software companies. He is active on social media and provides mentoring on 3D, product management, and technical career growth.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2018\/07\/beachphoto.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}],"related_articles":[{"ID":422022,"post_author":"6531","post_date":"2019-02-14 05:35:45","post_date_gmt":"2019-02-14 13:35:45","post_content":"","post_title":"5 Myths and 5 Realities of BIM-GIS Integration","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"5-myths-5-realities-bim-gis-integration","to_ping":"","pinged":"","post_modified":"2020-12-23 14:23:19","post_modified_gmt":"2020-12-23 22:23:19","post_content_filtered":"","post_parent":0,"guid":"http:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=422022","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":73691,"post_author":"3611","post_date":"2016-09-22 08:25:15","post_date_gmt":"2016-09-22 08:25:15","post_content":"","post_title":"BIM-GIS Integration with IFC","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"bim-gis-integration-with-ifc","to_ping":"","pinged":"","post_modified":"2018-03-26 21:10:24","post_modified_gmt":"2018-03-26 21:10:24","post_content_filtered":"","post_parent":0,"guid":"http:\/\/www.esri.com\/arcgis-blog\/products\/product\/uncategorized\/bim-gis-integration-with-ifc\/","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":71571,"post_author":"6531","post_date":"2016-04-01 11:53:36","post_date_gmt":"2016-04-01 11:53:36","post_content":"","post_title":"Increasing interest in the fusion of GIS and BIM","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"increasing-interest-in-the-fusion-of-gis-and-bim","to_ping":"","pinged":"","post_modified":"2022-08-11 10:25:16","post_modified_gmt":"2022-08-11 17:25:16","post_content_filtered":"","post_parent":0,"guid":"http:\/\/www.esri.com\/arcgis-blog\/products\/product\/uncategorized\/increasing-interest-in-the-fusion-of-gis-and-bim\/","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":253672,"post_author":"3611","post_date":"2018-07-17 10:46:56","post_date_gmt":"2018-07-17 17:46:56","post_content":"","post_title":"What's New for CAD and BIM (June 2018)","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"whats-new-for-cad-and-bim-june-2018","to_ping":"","pinged":"","post_modified":"2018-07-17 10:46:56","post_modified_gmt":"2018-07-17 17:46:56","post_content_filtered":"","post_parent":0,"guid":"http:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=253672","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":542742,"post_author":"9232","post_date":"2019-07-01 09:45:36","post_date_gmt":"2019-07-01 16:45:36","post_content":"","post_title":"Creating innovative story maps while inspiring new storytellers","post_excerpt":"","post_status":"publish","comment_status":"open","ping_status":"closed","post_password":"","post_name":"storyteller-interview-amanda-innovates-and-inspires","to_ping":"","pinged":"","post_modified":"2026-03-17 20:58:56","post_modified_gmt":"2026-03-18 03:58:56","post_content_filtered":"","post_parent":0,"guid":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=542742","menu_order":0,"post_type":"blog","post_mime_type":"","comment_count":"0","filter":"raw"}],"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/20191104_171757rr.jpg","wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2019\/12\/20191104_171757r.jpg"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - 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