The International standard calculates the quantities for building parts with consideration of openings.
No specific calculation rules, allowances, or restrictions are applied when using the International standard.
- What's New in Revit
- Revit 2026 Release Notes
- Get Started
- Have You Tried
- Cloud Models
- Model the Design
- Architectural Design
- Structures
- Mechanical, Electrical, and Plumbing (MEP)
- Document and Present the Design
- Analyze the Design
- Analyze the Design
- Area Analysis
- Route Analysis
- Revit Systems Analysis
- Lighting and Solar Analysis
- Energy Modeling for Revit
- Heating and Cooling Loads Analysis
- Solar Studies
- Display Styles for Analysis Add-In Applications
- Roombook, Areabook, and Buildingbook Extensions for Revit
- Roombook Extension for Revit
- Areabook Extension for Revit
- Buildingbook Extension for Revit
- Workflow: Buildingbook
- Buildingbook Project Standards
- Buildingbook Calculation Rules
- Buildingbook Calculation
- Review Calculated Building Part Quantity Data
- View and Edit Calculated Building Part Data
- View and Edit Calculated Building Part Subelement Data
- Export Buildingbook Data
- Quantity and Material IDs in Buildingbook
- Purge Deprecated Building Part Quantity Data from Your Project
- Troubleshooting Buildingbook
- Review the Version of the Roombook, Areabook, or Buildingbook Extension
- Change the Language of the Roombook, Areabook, or Buildingbook Extension
- Insight: Carbon Insights
- Collaborate with Others
- Customize Revit
- Dynamo for Revit
- Revit and Revit LT Installation
- Revit Developer's Guide
- Revit API Reference Guides
- Troubleshoot