OpenBuildings

OpenBuildings
Name	OpenBuildings
Developer	OpenBuildings Consortium
Released	2010
Latest release	2024
Genre	Building information modeling, architectural design
License	Mixed (proprietary and open components)

OpenBuildings OpenBuildings is a building information modeling platform used for architectural design, construction planning, and facility management. It integrates 2D drafting, 3D modeling, parametric component libraries, and simulation workflows to support multidisciplinary teams across projects. The platform interoperates with industry standards and connects to services provided by vendors and institutions worldwide.

Overview

OpenBuildings is positioned as a BIM and design collaboration environment that bridges stakeholders such as architecture firms, engineering consultancies, construction contractors, and asset managers. It supports workflows that reference formats and standards championed by organizations like buildingSMART International, ISO 19650, American Institute of Architects, Royal Institute of British Architects, and platform partners including Autodesk, Trimble, Bentley Systems, and Graphisoft. Target sectors include commercial, residential, infrastructure, cultural heritage, and healthcare projects involving clients such as Foster + Partners, Gensler, Arup, Atkins, and municipal authorities like City of London Corporation and New York City Department of Buildings.

History

Development of the platform began in the late 2000s amid shifts driven by projects at firms such as Zaha Hadid Architects and Norman Foster that emphasized computational design and integrated delivery. Early adopters included consultancies engaged in programmes like Crossrail and High Speed 2, which required complex coordination between design and construction teams. Funding and partnerships arose through collaborations with research centres such as MIT Media Lab, ETH Zurich, and Fraunhofer Society, and with standards bodies including ISO and buildingSMART International to improve interoperability with formats like IFC and GBXML. Subsequent releases added simulation and lifecycle features modeled on practices promulgated by institutions such as Royal Institute of British Architects and regulatory frameworks used by agencies like US General Services Administration.

Features and Capabilities

The platform aggregates capabilities for modeling, documentation, and analysis. Core features include parametric object libraries comparable to libraries used by Autodesk Revit, clash detection routines reminiscent of workflows in Navisworks, and quantity takeoff tools similar to those in CostX. It offers daylighting simulation influenced by research from Lawrence Berkeley National Laboratory, energy modelling interoperable with engines like EnergyPlus and IES VE, and structural analysis interfaces that exchange data with software such as SAP2000, ETABS, and STAAD.Pro. Collaboration features integrate with project management ecosystems like Procore, Aconex, and Asana, while versioning and change management echo services by GitHub and Atlassian.

Architecture and Technology

OpenBuildings is built on a modular architecture combining a core geometric kernel, a parametric component engine, and a cloud-enabled collaboration layer. The geometric kernel interoperates with formats supported by IFC, DWG, and PDF/A. Computational design scripting leverages concepts popularized by tools such as Grasshopper (software), Dynamo (visual programming), and APIs found in Rhino 3D. Cloud components employ container orchestration technologies associated with Kubernetes and continuous integration patterns from Jenkins and GitLab CI/CD. Security and identity management integrate with enterprise systems like Microsoft Azure Active Directory and Okta to meet procurement requirements used by organisations such as European Investment Bank and World Bank.

Use Cases and Applications

Use cases span design authoring, coordination, construction sequencing, and facilities management. Architectural studios use it for concept-to-detail workflows in projects by firms like SOM (Skidmore, Owings & Merrill), KPF, and HOK. Engineering consultancies apply its structural and MEP coordination in infrastructure programmes such as Crossrail and airport expansions at hubs like Heathrow Airport and Hartsfield–Jackson Atlanta International Airport. Contractors employ 4D scheduling and logistics coordination in megaprojects similar to Big Dig and Guggenheim Museum Bilbao retrofits. Facility managers integrate models with asset registries and CAFM solutions used by institutions such as Harvard University and National Health Service trusts.

Licensing and Community

Licensing is hybrid: a proprietary core with optional open-source plugins and community-contributed libraries. This model facilitates commercial deployments by corporations like AECOM and open contributions from academic labs at Stanford University and TU Delft. The community ecosystem organizes around conferences and events comparable to BILT, World Architecture Festival, and workshops hosted by buildingSMART International. Training and certification programmes are offered through partner organisations such as RIBA and vendor academies similar to Autodesk University.

Criticism and Limitations

Critics note interoperability constraints in heterogeneous project ecosystems dominated by tools from Autodesk and Bentley Systems, and limitations in supporting legacy formats used by public agencies like Department of Transportation (United States). Performance issues have been reported on very large models akin to problems encountered with Revit in megaproject contexts. Licensing complexity and the hybrid business model have provoked debates among open-source advocates associated with OpenSceneGraph and OSGeo about vendor lock-in. Finally, adoption barriers persist in regions where procurement rules favour established incumbents such as Oracle and Siemens.

Category:Building information modeling software