ChangeFlow - A Parametric Construction Change Impact Analyzer:
Intended users
- Construction Managers
- BIM/VDC Teams
- Design Teams
- Project Coordinators
- IPD Teams
Need you’re trying to provide a solution or support for
During construction, teams often struggle to:
- understand the downstream impacts of design changes,
- evaluate schedule and cost implications quickly,
- coordinate changes between design and construction teams,
- minimize rework and delays,
- compare multiple alternatives efficiently before making decisions.
Currently, information is often fragmented between BIM models, schedules, and spreadsheets, making collaboration slower and less transparent.
Inputs
Design Variables
- Structural system type (steel or timber)
- Prefabrication percentage
- Façade panel size
- Number of construction zones
- Crane count
- Floor-to-floor height
- Delivery frequency
Constants
- Site dimensions
- Building footprint
- Working hours
- Base labor assumptions
- Delivery access limitations
Underlying logic of the model you’ll implement
The model will use simplified rule-based relationships between design/construction parameters and measurable project outcomes.
- Higher prefabrication percentages reduce installation duration.
- More construction zones allow parallel sequencing but increase coordination complexity.
- Larger façade panels improve installation speed but may create transportation challenges.
- Additional cranes may shorten schedule duration but increase equipment cost.
The workflow will connect parametric building geometry in Revit with Dynamo-based calculations and evaluation logic.
Outputs
The tool will generate:
- Estimated project duration
- Estimated construction cost
- Coordination risk score
- Prefabrication efficiency score
- Installation productivity metrics
Outputs will be visualized through:
- comparison charts,
- color-coded indicators,
- and simplified Revit model visualizations.
The goal is to help users quickly compare alternatives and identify efficient construction strategies.
PITCH:
Proposed Timeframe
Minimum Viable Tool
- Create a simplified modular building model in Revit
- Develop Dynamo inputs for key variables
- Create rule-based schedule and cost calculations
- Generate visual comparison outputs for alternatives
Nice-to-Have Features
- Generative Design integration for automatic option generation
- Carbon impact evaluation
- Interactive dashboard visualization
- More advanced coordination risk analysis
Proposed Workflow Timeline
Phase 1-Develop simplified Revit geometry and identify key parameters.
Phase 2-Build Dynamo logic connecting inputs to schedule, cost, and coordination calculations.
Phase 3-Create comparison visualizations and package the tool for Dynamo Player.
Phase 4-Prepare documentation and demonstration video.
Expected Outcome
This project explores how parametric workflows can improve collaboration, transparency, and decision-making during construction. Rather than focusing only on geometry generation, the project investigates how parametric design can support construction intelligence and integrated project delivery workflows.
