"Discover My Advanced Skills in Revit BIM: Experiences and Learnings from an International Project in the United States"
Emmanuel SAINT LOUIS
--COORDINATEUR BIM/ PROJET MANAGER PROFESSIONNEL/CONDUCTEUR DE TRAVAUX ET DE GéNIE CIVIL
Technical of Revit 3D Modeling and Pre-Dimensioning Rules
Introduction
Revit, a Building Information Modeling (BIM) software developed by Autodesk, enables the design and management of construction projects in 3D. Techniques of 3D modeling and pre-dimensioning rules play a crucial role in ensuring the accuracy and efficiency of projects.
Techniques of Revit 3D Modeling
1. Creating Basic Components:
- Walls: Walls can be drawn in plan view and adjusted to define their thickness, height, and materials.
- Doors and Windows: Insert doors and windows from the library, adjust dimensions, and select finishes.
- Floors and Roofs: Create floors and roofs by defining contours, slopes, and materials.
2. Using Families:
- System Families: Predefined components such as walls, floors, and roofs.
- Component Families: Customizable objects like furniture and technical equipment.
- In-Place Families: Unique elements created specifically for the project.
3. Parametric Modeling:
- Parametric objects allow for dynamic modifications, facilitating adjustments and updates to the model.
4. Collaboration:
- Use centralized files and worksets to enable collaboration among multiple users.
5. Levels and Grids:
- Levels: Define the heights of different building floors.
- Grids: Organize and align structural and architectural elements.
6. Annotations and Documentation:
- Dimensions: Add dimensions to indicate distances and sizes of elements.
- Tags and Legends: Annotate components to provide specific information.
Pre-Dimensioning Rules
1. Walls:
- Initial thickness based on material and building height (e.g., load-bearing concrete wall 20-30 cm thick).
2. Floors:
- Estimated thickness at 1/20th of the span for reinforced concrete floors with moderate loads.
3. Beams:
- Approximate initial height of span/10.
4. Columns:
- Initial dimensions based on loads and clear height between levels (e.g., 30x30 cm for low-rise buildings).
BIM Naming and Documentation
1. EIR (Employer's Information Requirements):
- Document describing the employer's project information requirements.
2. BEP (BIM Execution Plan):
- BIM execution plan defining processes, responsibilities, and BIM deliverables.
3. BIP (BIM Implementation Plan):
- Detailed plan for integrating BIM into the project.
4. MIDP (Master Information Delivery Plan):
- Master plan for information delivery, defining delivery times and required formats.
5. MPDT (Model Production and Delivery Table):
- Table specifying model production and delivery responsibilities and deadlines.
6. TIDP (Task Information Delivery Plan):
- Plan specifying the information to be provided by each discipline.
Tips for Revit BIM Modeling
1. Use Parametric Families:
- Create reusable and easily modifiable components.
2. Maintain Consistency in Levels and Grids:
- Facilitates alignment and coordination of structural and architectural elements.
3. Utilize Collaboration Tools:
- Use Revit Worksharing for simultaneous work by multiple users.
4. Automate Repetitive Tasks:
- Use Dynamo to automate common tasks and improve efficiency.
5. Perform Clash Detection:
- Use Navisworks to identify and resolve conflicts between structural and MEP elements.
Practical Example of Revit BIM
Context: A project to construct an office building where the architect is responsible for the design and material selection, the structural engineer for structural elements, and the MEP engineers for mechanical, electrical, and plumbing systems.
Project Steps:
1. Architectural Design:
- Architect:
- Create exterior concrete walls, insert doors and windows.
- Select construction materials (e.g., bricks, wood for interior finishes).
- Develop plans, elevations, and sections.
2. Structural Modeling:
- Structural Engineer:
- Model beams, columns, and floors using pre-dimensioning rules.
- Adjust element dimensions based on detailed structural analyses.
3. MEP Modeling:
- MEP Engineers:
- Use Revit MEP to model HVAC, electrical, and plumbing systems.
- Coordinate MEP systems with architectural and structural elements.
4. Coordination and Integration:
- BIM Coordination:
- Use a centralized file in Revit to integrate all disciplines.
- Perform clash detection with Navisworks to identify interferences.
- Resolve conflicts in collaboration with different teams.
5. Georeferencing and Physical North:
- Georeferencing:
- Define the project's geographical coordinates in Revit.
- Use base points to align the model with the actual site.
- Physical North:
- Adjust the geographic north to match the building's real-world orientation on site.
Visual Illustration
- Plan View:
- Show load-bearing walls, openings for doors and windows, and major MEP elements.
- Elevation View:
- Display levels with annotations of heights and dimensions of different floors.
- Section View:
- Cross-section showing floor thicknesses, beam heights, and column dimensions.
- Clash Detection Report:
- Screenshot of clash detection results in Navisworks.
Elements of BIM
BIM is a collaborative method based on the generation and exchange of data and information between various project stakeholders. For effective functioning, BIM requires the integration of five elements:
1. Processes:
- Define and follow clear workflows for each project phase.
2. Policies:
- Establish standards and guidelines to ensure project consistency and compliance.
3. People:
- Train and engage competent and well-informed professionals.
4. Data/Information:
- Manage and exchange accurate and up-to-date information throughout the project.
5. Technologies:
- Use appropriate tools and software for modeling, coordination, and project management.
Techniques of Revit 3D Modeling and Pre-Dimensioning Rules
领英推荐
Introduction
Revit, a Building Information Modeling (BIM) software developed by Autodesk, enables the design and management of construction projects in 3D. Techniques of 3D modeling and pre-dimensioning rules play a crucial role in ensuring the accuracy and efficiency of projects.
Technical of Revit 3D Modeling
1. Creating Basic Components:
- Walls: Walls can be drawn in plan view and adjusted to define their thickness, height, and materials.
- Doors and Windows: Insert doors and windows from the library, adjust dimensions, and select finishes.
- Floors and Roofs: Create floors and roofs by defining contours, slopes, and materials.
2. Using Families:
- System Families: Predefined components such as walls, floors, and roofs.
- Component Families: Customizable objects like furniture and technical equipment.
- In-Place Families: Unique elements created specifically for the project.
3. Parametric Modeling:
- Parametric objects allow for dynamic modifications, facilitating adjustments and updates to the model.
4. Collaboration:
- Use centralized files and worksets to enable collaboration among multiple users.
5. Levels and Grids:
- Levels: Define the heights of different building floors.
- Grids: Organize and align structural and architectural elements.
6. Annotations and Documentation:
- Dimensions: Add dimensions to indicate distances and sizes of elements.
- Tags and Legends: Annotate components to provide specific information.
Pre-Dimensioning Rules
1. Walls:
- Initial thickness based on material and building height (e.g., load-bearing concrete wall 20-30 cm thick).
2. Floors:
- Estimated thickness at 1/20th of the span for reinforced concrete floors with moderate loads.
3. Beams:
- Approximate initial height of span/10.
4. Columns:
- Initial dimensions based on loads and clear height between levels (e.g., 30x30 cm for low-rise buildings).
BIM Naming and Documentation
1. EIR (Employer's Information Requirements):
- Document describing the employer's project information requirements.
2. BEP (BIM Execution Plan):
- BIM execution plan defining processes, responsibilities, and BIM deliverables.
3. BIP (BIM Implementation Plan):
- Detailed plan for integrating BIM into the project.
4. MIDP (Master Information Delivery Plan):
- Master plan for information delivery, defining delivery times and required formats.
5. MPDT (Model Production and Delivery Table):
- Table specifying model production and delivery responsibilities and deadlines.
6. TIDP (Task Information Delivery Plan):
- Plan specifying the information to be provided by each discipline.
Tips for Revit BIM Modeling
1. Use Parametric Families:
- Create reusable and easily modifiable components.
2. Maintain Consistency in Levels and Grids:
- Facilitates alignment and coordination of structural and architectural elements.
3. Utilize Collaboration Tools:
- Use Revit Worksharing for simultaneous work by multiple users.
4. Automate Repetitive Tasks:
- Use Dynamo to automate common tasks and improve efficiency.
5. Perform Clash Detection:
- Use Navisworks to identify and resolve conflicts between structural and MEP elements.
Practical Example of Revit BIM
Context: A project to construct an office building where the architect is responsible for the design and material selection, the structural engineer for structural elements, and the MEP engineers for mechanical, electrical, and plumbing systems.
Project Steps:
1. Architectural Design:
- Architect:
- Create exterior concrete walls, insert doors and windows.
- Select construction materials (e.g., bricks, wood for interior finishes).
- Develop plans, elevations, and sections.
2. Structural Modeling:
- Structural Engineer:
- Model beams, columns, and floors using pre-dimensioning rules.
- Adjust element dimensions based on detailed structural analyses.
3. MEP Modeling:
- MEP Engineers:
- Use Revit MEP to model HVAC, electrical, and plumbing systems.
- Coordinate MEP systems with architectural and structural elements.
4. Coordination and Integration:
- BIM Coordination:
- Use a centralized file in Revit to integrate all disciplines.
- Perform clash detection with Navisworks to identify interferences.
- Resolve conflicts in collaboration with different teams.
5. Georeferencing and Physical North:
- Georeferencing:
- Define the project's geographical coordinates in Revit.
- Use base points to align the model with the actual site.
- Physical North:
- Adjust the geographic north to match the building's real-world orientation on site.
Visual Illustration
- Plan View:
- Show load-bearing walls, openings for doors and windows, and major MEP elements.
- Elevation View:
- Display levels with annotations of heights and dimensions of different floors.
- Section View:
- Cross-section showing floor thicknesses, beam heights, and column dimensions.
- Clash Detection Report:
- Screenshot of clash detection results in Navisworks.
Elements of BIM
BIM is a collaborative method based on the generation and exchange of data and information between various project stakeholders. For effective functioning, BIM requires the integration of five elements:
1. Processes:
- Define and follow clear workflows for each project phase.
2. Policies:
- Establish standards and guidelines to ensure project consistency and compliance.
3. People:
- Train and engage competent and well-informed professionals.
4. Data/Information:
- Manage and exchange accurate and up-to-date information throughout the project.
5. Technologies:
- Use appropriate tools and software for modeling, coordination, and project management.
Conclusion
Using Revit for 3D modeling and applying pre-dimensioning rules allows project teams to create accurate and coordinated models, facilitating collaboration among architects, structural engineers, and MEP professionals. Integrating these disciplines into a single georeferenced model ensures that the project meets design specifications and site constraints, while minimizing the risk of conflicts and errors during construction.