ConstruBIM Academy · 819 Q&A
BIM Software Q&A Library
Real questions, answered by working BIM consultants. Browse by category or search across everything.
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📘 BIM Fundamentals, Standards & Information Management · 60
This category covers the concepts, standards and management frameworks that sit underneath every BIM tool: what an information model is, how ISO 19650 organises information management, how openBIM standards such as IFC, BCF and IDS make data portable, and how national mandates shape practice. It is product-neutral. Learners use it to understand the rules of the game before, or alongside, learning any authoring, coordination or CDE software.
- What does BIM actually stand for, and is it a piece of software?
- What is the difference between a 3D CAD model and a BIM model?
- What is an information model in ISO 19650 terms?
- What is a federated model?
🏛️ BIM Authoring — Architecture & Building Design · 50
Architectural BIM authoring tools are where the building model is created: walls, slabs, roofs, openings, stairs and spaces are modelled as intelligent objects that carry geometry and data at the same time. From that single model the team produces plans, sections, schedules and quantities, and exchanges the design with structural, MEP and construction teams through native links or open formats such as IFC and BCF. This category covers full BIM authoring platforms, lighter or early-stage design tools that hand over to them, and the products that have been retired or replaced.
- What is the difference between .rvt, .rfa and .rte files in Revit?
- How do several people work on the same Revit model at the same time?
- Which IFC exports from Revit are buildingSMART certified, and how do I control the export?
- What are the main ways to automate Revit, and when would I choose each?
🏗️ Structural BIM, Analysis & Steel/Concrete Detailing · 50
Structural software covers three linked jobs in a BIM workflow: authoring the physical structural model (steel, concrete, timber), analysing and designing members and connections against building codes, and producing fabrication-level detailing such as shop drawings, CNC files and rebar schedules. The analytical model, the physical BIM model and the fabrication data are exchanged between tools through IFC, SAF, CIS/2, DSTV/NC and vendor-specific links. The category is dominated by Trimble Tekla, Autodesk (Revit, Robot, Advance Steel), Nemetschek brands (ALLPLAN, SDS2, RISA, SOFiSTiK), Bentley and specialist analysis vendors such as CSI, Dlubal and IDEA StatiCa.
- What is Tekla Structures and who uses it?
- What are the Carbon, Graphite and Diamond subscriptions in Tekla Structures?
- Which IFC schemas does Tekla Structures 2026 support and what is certified?
- How can I automate Tekla Structures?
🔧 MEP Design, Analysis & Fabrication · 50
MEP software covers the mechanical, electrical and plumbing systems of a building: ducts, pipes, cables, equipment and the calculations that size them. In a BIM workflow these tools either run inside a host platform such as Revit or AutoCAD, or provide their own CAD core, and they add engineering content, code-based calculations and fabrication-level detail to the coordinated model. The category spans design and analysis (loads, energy, hydraulics, electrical), detailing to LOD 400, and the fabrication and field tools that turn a model into spools, cut lists and installation packages.
- Is Revit MEP still a separate product?
- What are fabrication parts in Revit and when should I use them instead of standard duct and pipe?
- How do I control which parameters end up in IFC property sets when exporting an MEP model from Revit 2027?
- What options exist for automating repetitive MEP tasks in Revit?
🧩 Model Coordination, Clash Detection, Checking & Review · 50
Coordination and checking tools take the discipline models produced in authoring software (architecture, structure, MEP, civil), federate them into one shared model, and test that model for geometric clashes, clearance problems, missing data and rule violations. They are also where issues are raised, assigned and closed, usually through the open BCF format, so that the design team can fix problems before they reach site. Most tools in this category read IFC and native formats, and many now offer cloud viewers and automated checks against IDS or custom rulesets.
- What is the difference between Navisworks Manage, Simulate and Freedom?
- What are NWC, NWF and NWD files in Navisworks?
- How do I set up a clash test between two disciplines in Navisworks Clash Detective?
- How do Navisworks clashes get to the design team as issues?
☁️ Common Data Environments & Project Information Management · 55
A Common Data Environment (CDE) is the agreed single source of information for a project or asset, used to collect, manage and share every information container (models, drawings, documents, data) through a controlled process. ISO 19650 defines four container states (Work in Progress, Shared, Published, Archived), plus naming, revision and status metadata that the CDE must enforce. These platforms sit between authoring tools such as Revit or Archicad and the site, client and operations teams, and they provide the audit trail that contracts and information protocols rely on.
- What is a Common Data Environment (CDE) and why does every BIM project need one?
- What are the four information states in an ISO 19650 CDE?
- How does ISO 19650 information container naming work, and what does the CDE do with it?
- What is the difference between a status (suitability) code and a revision code in a CDE?
⏱️ 4D Scheduling, 5D Estimating & Quantity Takeoff · 50
4D and 5D tools connect the BIM model to time and money. 4D software links model elements to schedule activities so the construction sequence can be simulated, checked for logistics and space conflicts, and communicated to site teams. 5D estimating and quantity takeoff software extracts quantities from 2D drawings and 3D models, links them to cost data and produces bills of quantities, estimates and cash-flow forecasts that update when the design changes.
- What is the difference between 4D and 5D BIM?
- Should I use Navisworks TimeLiner or a dedicated 4D tool such as SYNCHRO 4D?
- How do Primavera P6 and Microsoft Project fit into a 4D workflow?
- How should a BIM Execution Plan under ISO 19650 support 5D quantity takeoff?
🛣️ Infrastructure, Civil Engineering & Geospatial BIM · 50
Infrastructure BIM software models linear and site assets such as roads, railways, bridges, earthworks, drainage and utilities as georeferenced 3D objects with attributes. It sits between survey and GIS data on one side and structural, construction and asset-management tools on the other. Since IFC 4.3 became an ISO standard, these tools increasingly exchange alignments, corridors and civil structures through openBIM formats rather than proprietary files.
- What is Autodesk Civil 3D and how is it different from plain AutoCAD?
- How is Civil 3D licensed and is there a free version?
- What are Data Shortcuts in Civil 3D and when should I use them instead of external references?
- How do I get a Civil 3D model into IFC for an openBIM coordination model, and what are the limits?
⚙️ Computational Design, Automation & BIM Development · 50
Computational design and BIM development tools let teams describe geometry and data as rules, scripts and code instead of drawing every element by hand. They range from visual programming environments (Dynamo, Grasshopper, Marionette, GenerativeComponents) through scripting and API layers (pyRevit, Revit API, Autodesk Platform Services) to cloud generative and feasibility platforms (Forma, TestFit, Hypar, Archistar) and data-exchange frameworks such as Speckle. In a BIM workflow they are used to automate repetitive modelling and documentation, generate and compare design options, validate model data, and connect authoring tools to each other and to external systems.
- What is Dynamo and do I have to pay for it?
- What is the difference between a .dyn and a .dyf file in Dynamo?
- Which Dynamo version comes with Revit 2027, and why do my old graphs and packages break after upgrading?
- Is Grasshopper a separate product from Rhino?
🎨 Visualization, Rendering & VR/AR/XR · 50
Visualization software turns BIM and 3D models into images, animations, real-time walkthroughs and immersive VR/AR experiences. In a BIM workflow these tools sit downstream of the authoring model: they read geometry and materials from Revit, Archicad, SketchUp, Rhino or IFC and are used for design communication, client approval, design review in VR and construction coordination on site. They do not replace the coordinated model; they present it.
- What is Enscape and which programs does it work with?
- How do I share an Enscape scene with a client who does not have Revit or Enscape?
- Can I take an Enscape scene into V-Ray or Chaos Vantage for a higher-quality render?
- What is the difference between Lumion View, Lumion Pro and Lumion Studio?
📡 Reality Capture, Point Clouds & Scan-to-BIM · 50
Reality capture software turns laser scans, photographs and 360° imagery of existing buildings and sites into registered point clouds, meshes and eventually BIM geometry. In a BIM workflow these tools sit at the front of renovation, retrofit and verification projects: they register raw scans, clean and index them, publish them for viewing in Revit, Navisworks or the cloud, and support the modelling of as-built elements (scan-to-BIM) or the comparison of installed work against design models. Formats such as E57, RCP/RCS, LAS and LGS are the common currency between capture hardware, processing software and authoring tools.
- What is the difference between an RCP file and an RCS file in Autodesk ReCap?
- My scanning contractor delivered E57 files. How do I get them into Revit?
- Do I need a separate ReCap Pro licence if my office already has the AEC Collection?
- Leica has Cyclone FIELD 360, REGISTER 360 PLUS and 3DR. Which one do I actually need?
🔓 openBIM Standards, Open-Source & Interoperability Tools · 54
openBIM tools let project teams exchange, check and coordinate building information using vendor-neutral standards published by buildingSMART: IFC for model data, BCF for issues, IDS for information requirements, bSDD for shared dictionaries and COBie for handover data. This category covers the open-source libraries, free viewers, checkers and interoperability utilities that read, write, validate and federate that data outside any single authoring platform. They are used by BIM coordinators, developers and information managers to keep workflows independent of proprietary file formats.
- What does openBIM actually mean?
- Which IFC versions exist and which one should I ask for today?
- What is a Model View Definition (MVD) and why does the export dialog ask me to pick one?
- What is inside a BCF file?
🧊 General 3D Modeling, CAD & Mechanical Design · 50
General CAD, 3D modelling and mechanical design tools produce geometry rather than building information: lines, surfaces, solids and meshes without the object semantics (wall, door, slab) that BIM authoring tools attach and that IFC carries between platforms. In AEC they sit around the BIM model: 2D drafting and legacy DWG/DGN drawings, concept massing and facade studies, fabrication and product design for building components, and visualisation or animation of the finished design. Understanding where geometry-only tools end and information-rich BIM begins is what lets a team move data between them without losing meaning.
- What is the difference between a general 3D modelling or CAD tool and a BIM authoring tool?
- Where do general CAD and 3D tools normally sit inside an AEC BIM workflow?
- Which exchange formats should I use to move geometry between CAD tools and BIM tools without losing precision?
- I need an AutoCAD replacement that reads and writes DWG. What are the realistic options?
🏢 Facility Management, Asset Handover & Digital Twins · 50
This category covers the software that takes a BIM model past practical completion: handover tools that structure asset data (COBie, IFC, ISO 19650-3 asset information models), CAFM/IWMS and enterprise asset management systems that run maintenance and space operations, and digital twin platforms that link the model to live BMS, IoT and CMMS data. Together they turn the project information model into an asset information model the owner can operate for decades.
- What is Autodesk Tandem and how is it different from Revit?
- How do Tandem facility templates relate to an Asset Information Requirements (AIR) document?
- Can I feed BMS or IoT data into Tandem and read it back through an API?
- What is the Bentley iTwin Platform and what is iTwin.js?
🌿 Energy, Sustainability & Building Performance Analysis · 50
Building performance analysis software takes geometry and data from a BIM model and simulates how the building will behave: energy use, heating and cooling loads, daylight, glare, thermal comfort, overheating, moisture and embodied carbon. In a BIM workflow these tools sit between the authoring model (Revit, Archicad, Rhino) and compliance or certification outputs (Part L, ASHRAE 90.1, LEED, BREEAM, EN 15978 whole-life carbon). Exchange usually happens through gbXML, IFC, IDF/OSM or direct plug-ins, and the quality of the analytical model depends heavily on how the BIM model was built.
- What is IES VE and what does the 'VE' stand for?
- How do I get a Revit model into IES VE?
- Is there an official IES certification I can put on my CV?
- What simulation engine does DesignBuilder use?
📱 Construction Field, Progress Monitoring & AI in BIM · 50
Field and progress-monitoring software takes the coordinated BIM model out of the office and onto the site: mobile apps for drawings, issues, checklists and RFIs; augmented-reality tools that overlay the model on built work; 360-camera, drone and scan capture that is compared against the model and schedule by computer vision; and layout robots that print the model directly on the slab. A second group of tools applies AI to the model itself, generating documentation or building systems inside Revit and Archicad. Together they close the loop between design intent, what was built, and what is reported back into the schedule.
- Is Autodesk Build the same thing as PlanGrid?
- How do I get a Revit model onto a site engineer's iPad in Autodesk Build?
- How can I pull Autodesk Build issues and RFIs into Power BI or a data warehouse automatically?
- Is Fieldwire free to use?
About this database
Product names are trademarks of their respective owners. Facts are verified against vendor documentation and dated sources; pricing is described by model only. Spotted an error or a missing tool? Write to [email protected] and we will correct it. Database updated: 2026-09-15.