Drawing Office Chairs in Revit

Drawing office chair models in Revit can be achieved through two main methods: 'In-Place Model' or 'Creating Furniture Families'. Here are the specific steps:

1. Using the 'In-Place Model' Function Suitable for quickly creating one-time-use chair models.

• Step 1: Select the 'Architecture' or 'Structure' tab in the ribbon, click the 'In-Place Model' button, and choose 'Furniture' as the model category in the pop-up dialog.
• Step 2: After entering the 'Model In-Place Editor' mode, select shape tools based on the chair's structure:
  • Extrusion: Used to create regular geometric shapes such as seats, backrests, or chair legs. For example, draw a rectangular profile and specify the height to generate a seat.
  • Blend: If the seat or backrest needs to have an arched or tapered cross-section, draw two profiles of different shapes (e.g., a circular top and a rectangular bottom) and specify the height to generate a transitional shape.
  • Revolve: Suitable for creating circular or ring-shaped structures, such as the rotating part of a chair, by revolving a 2D profile to generate a 3D solid.
  • Sweep/Sweep Blend: Used for situations where the cross-section of chair legs or armrests changes along a path. First, draw a path curve (e.g., a curve or polyline), then define the cross-sectional shape (e.g., a circle or rectangle) to generate a shape that changes along the path.
• Step 3: After completing the geometric shapes, click 'Finish Edit Mode' to exit the editing mode and adjust material parameters in the properties panel. For example, set the seat material to 'Leather' and the chair leg material to 'Mahogany', and adjust the texture direction or reflection parameters through the material editor.

2. Creating Furniture Families Suitable for chair models that need to be reused or adjusted parametrically, supporting the rapid generation of variants with different dimensions or materials by modifying parameters.

• Step 1: Create a new 'Metric Furniture.rft' family template file and define reference planes and dimension parameters (e.g., seat height, chair leg length, backrest inclination angle).
• Step 2: Use tools such as extrusion and revolve to draw the various components of the chair and ensure parameter linkage through constraints such as 'Align' and 'Lock'. For example, lock the bottom of the chair legs to the ground reference plane and control the seat height through parameters.
• Step 3: Add material parameters to enable the model to quickly switch material types as needed. For example, create 'Seat Material' and 'Frame Material' parameters and associate them with leather and mahogany materials, respectively.
• Step 4: Save as a '.rfa' format family file, which can be directly loaded into projects for subsequent use. If multiple types need to be generated, duplicate the chair and modify dimension parameters (e.g., widen the seat or lengthen the chair legs).
• Alternative Solution: You can also choose the 'Metric Generic Model' family template file, flexibly use commands such as extrusion, sweep, and blend to create shapes, and then generate different types of chairs by duplicating and adjusting parameters after completion.

3. Practice with Real Questions to Strengthen Skills If you need to prepare for exams or standardized modeling tasks, you can refer to Building Information Modeling BIM1+X real questions for targeted practice. For example, create a chair model with a seat length of 500mm, width of 400mm, and height of 450mm as required by the question, set the cushion material to 'Leather', the rest to 'Mahogany', and adjust the texture parameters through the material editor. After completing the modeling, save it as a '.rvt' project file or '.rfa' family file according to the specified path.