BIMQuantFlow Documentation
Welcome to the official BIMQuantFlow documentation. Learn how to connect your Revit models, build node-based workflows, and generate instant, zero-error BC3 budgets.
1. Introduction to BIMQuantFlow
BIMQuantFlow is a next-generation quantity surveying tool designed specifically for BIM workflows. Instead of manually exporting endless Excel spreadsheets from Revit, BIMQuantFlow allows you to directly extract metadata from your models (BFX) and process it using a visual node graph to automatically output standard BC3 files and Markdown reports.
Key Concepts
- BFX Files: The proprietary data format extracted directly from your Revit models, containing all necessary element parameters and classifications.
- Node Graph: The visual editor where you connect data extraction nodes, filter nodes, and budget nodes to define the logic of your takeoff.
- BC3 Export: The industry-standard format for construction budgets and databases, fully supported as an automated output.
2. Extracting Data from Revit
The workflow begins inside Autodesk Revit using the BIMQuantFlow extraction plugin.
- Open your project in Autodesk Revit.
- Navigate to the BIMQuantFlow add-in tab.
- Select the categories or elements you wish to include in your budget.
- Ensure your elements have the correct Classification Codes (Keynotes or Assembly Codes).
- Click Export to BFX. This file serves as the input for your web workflow.
3. Building Workflows in the Node Editor
Once you have your BFX data, upload it to the web application and begin building your logic graph.
Data Nodes (BFX/Revit)
Load your extracted BFX files into the graph. These act as the starting source nodes for all downstream calculations.
Processing Nodes
Filter, merge, or transform data parameters to match them with your target cost database items.
Budget Nodes
The final step. These nodes take processed data and automatically compile it into a hierarchical budget structure.
Report Nodes
Generate human-readable Markdown reports detailing every item, measurement, and the Revit GUID of the source element for traceability.
Connect the output port of your BFX node to the input port of the Budget node. Press the Execute button on the target node to run the calculation engine.
4. Generating the BC3 File
Format Note: BIMQuantFlow maps Classification Codes directly to BC3 Item Codes and attaches measurements with the element's Revit GUID as a comment.
After executing a Budget Node, the application automatically handles BC3 creation. The resulting file will be temporarily stored in your project workspace. You can double-click the Budget node (or use the built-in BC3 viewer) to immediately review the generated file structure before downloading it to your local machine.
5. Account & Settings
BIMQuantFlow uses a secure cloud workspace synchronized with your AWS Cognito account.
- Manage your active sessions and devices in the Devices section.
- View billing history and manage your seats in the Subscription section.
- Access global controls for Dark/Light mode and Language localization at the top right of the application.
BIMQuantFlow v2.0
Last updated: Feb 2026