Building Envelope - Exercise 3

Learn Revit > Module 2 > Exercise 3

Creating Roof Shapes

In this exercise, you will create two hip roofs and join them for the house used in the previous exercise using Autodesk Revit.

Objectives:

• Create roofs by specifying their footprint and adjusting their properties.

• Modify a roof footprint and slope-defining edges to fine-tune the shape and create various roof shapes and forms.

• Create a custom roof form by extruding a roof surface from a sketched profile.

Create a hip roof over the main living area

1. Download the start file here.

2. Open the Roof-Living & Bedrooms plan view. Focusing on roof 1.

   

3. On the Architecture tab, click Roof by Footprint.

   

4. In Properties Palette, select Basic Roof Generic - 12” roof type and set Base Offset from Level = 0’-0” (0m).

5. In Modify | Create Roof Footprint tab, confirm Boundary Line and Line mode is selected.

   

   a. Mark Defines slope check box.

   

6. Create a closed boundary as indicated by the 3 sketch lines shown in red for roof form 1.

   

   a. Click Modify command to end sketching.

   *Note: Linework must be contiguous.*
   

7. Set the roof pitch for the sloped linework.

   a. Window select all of the sketch linework for the roof sketch.

   

   b. In Properties palette, set pitch to 3” (0.0762m).

   

8. Click Finish Edit Mode to create the 3D roof element.

   

   Note: If you receive error messages, confirm that none of the linework overlaps itself. Then try Finish Edit mode again.

   a. Attach highlighted walls to roof? Click Yes.

   

9. Roof progress shown below.

   

Create a hip roof over the bedroom area

1. Open the Roof-Living & Bedrooms plan view. Focusing on roof 2.

   

2. On the Architecture tab, click Roof by Footprint.

   

3. In Properties Palette, select Basic Roof Generic - 12” roof type and set Base Offset from Level = 0’-0” (0m).

4. In Modify | Create Roof Footprint tab, confirm Boundary Line and Line mode is selected.

   

   a. Mark Defines slope check box.

   

5. Create the 3 sketch lines shown below in blue for roof form 2.

   

   a. Hit ESC key once to pause sketching continuously.

   b. Unmark Defines slope check box.

   

   a. Create 1 sketch line shown below in green for roof form 2 to create a closed boundary.

   

6. Set the roof pitch for the sloped linework.

   a. Select the 3 sketch lines below.

   

   b. In Properties palette, set pitch to 3” (0.0762m).

   

7. Click Finish Edit Mode to create the 3D roof element.

   

   Note: If you receive error messages, confirm that none of the linework overlaps itself. Then try Finish Edit mode again.

   a. Attach highlighted walls to roof? Click Yes.

   

8. Roof progress shown below.

   

Join the two hip roofs together

1. Open the {3D} 3D View. Orbit the view to the following orientation shown below where we can see the gable end of the bedroom roof created in the previous step.

   

2. Select the bedroom roof, the one with the gable end facing you on-screen.

3. On the Modify | Roofs tab, Geometry panel, click the Join / Unjoin Roof tool.

   

   a. Select the top edge of the bedroom roof as indicated by Mark 1 below.

   

   b. Then, pick the face of the main living room roof to project to as indicated by Mark 1 below.

   

4. Roof progress as shown below.

   

5. Cleanup the interior walls projecting through the bedroom roof.

   a. Select the interior walls.

   b. Click Attach / Top Base command.

   c. Select bedroom roof.

6. Roof completed as shown below.

   

   This concludes Exercise 3. Save the Revit file as: Module02Ex03_Finished.rvt and hand in.