Automate CAD-BIM Quantity Takeoffs with HTML Reporting
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Streamline your construction project management with an automated workflow that extracts BIM data, calculates wall quantities, and generates professional HTML reports. This n8n workflow transforms raw Revit data into actionable insights, saving time and reducing manual errors.
About This Workflow
This n8n workflow is designed to automate the process of extracting quantity takeoff data from Revit models and presenting it in a clear, actionable HTML report. It begins by triggering a Revit converter to extract data into an Excel file. The workflow then reads and parses this Excel file, filters specifically for wall elements, and cleans the relevant data, such as wall type names and volumes. Subsequently, it intelligently groups the wall data by type, calculating total volume, wall count, and average volume for each. Finally, this aggregated data is used to generate a well-formatted HTML report, providing a comprehensive overview of wall quantities for better project planning and costing.
Key Features
- Automated Data Extraction: Leverages a Revit converter to automatically extract data from RVT files.
- Intelligent Data Processing: Parses Excel output, filters for specific elements (e.g., walls), and cleans data.
- Dynamic Grouping & Aggregation: Groups walls by type, calculates total volume, counts, and averages.
- Professional HTML Reporting: Generates a clean and organized HTML report for easy review and sharing.
- Error Handling: Includes checks for extraction success and provides informative error messages.
How To Use
- Manual Trigger: Initiate the workflow by clicking the 'Start - Click to begin' node.
- Configure File Paths: In the 'Setup - Define file paths' node, update
path_to_revit_converterandrevit_filewith your specific file locations. - Execute Revit Converter: The 'Extract - Run Revit converter' node will run the specified executable with your Revit file.
- Review Extraction Success: The 'Check - Did extraction succeed?' node will route the workflow based on the converter's output.
- Process Excel Data: If successful, the workflow will read (
Extract - Read Excel file from disk) and parse (Extract - Parse Excel to data) the generated Excel file. - Filter and Clean Walls: Use the 'Transform - Filter only OST_Walls' and 'Transform - Clean wall data' nodes to refine the relevant information.
- Aggregate Wall Quantities: The 'Transform - Group by Type Name & sum Volume' node aggregates data by wall type.
- Generate HTML Report: The 'Transform - Generate HTML Report' node creates the final output based on the aggregated data.
Apps Used
Workflow JSON
{
"id": "4af5cb32-9f82-4df7-995c-16e07f4f827f",
"name": "Automate CAD-BIM Quantity Takeoffs with HTML Reporting",
"nodes": 28,
"category": "Operations",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
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ID: 4af5cb32-9f82...
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