Creating a Single Slope Roof in AutoCAD Architecture

When creating a roof in AutoCAD Architecture, it defaults to creating a roof with a ridge down the middle (going the long direction) when using the Roof tool.  There are many times when a single slope roof is needed, whether that is a long sloping main roof on a commercial building or on a shed roof over an extension on the side of a house.  The following will outline steps to get a shed style single slope roof on the side of a house as an example.

1. Create a roof:
   1. Select the Roof tool from the Design palette or from the Build panel of the Home tab.
   2. In the Properties palette, verify the following information:
      • The Shape should be set to Single Slope.
      • The Overhang should be set to whatever is desired for the overhangs.  This will affect all sides of the shed roof.  If the high side of the shed roof will be against another wall, this overhang can be changed to 0″ later in the process.
      • The Rise and Slope is not important, as it will change later in the process.
2. Highlight the roof.  Pick the corners of the walls for the shed roof.  Press ENTER when complete.  A hip roof has been created.
3. Pick and highlight the grip point at one end of the ridge.  Move the cursor past the end of the structure and pick a point anywhere to create a gable end.  Do the same to the other end of the structure.  The roof should now be a gable roof with a ridge down the middle.
4. Pick and highlight the grip point that is in the center of the ridge.  Move the cursor past the “high side” wall and pick a point anywhere.  A shed roof has now been created.
5. To modify the roof slope for proper pitch:
   1. Highlight the roof and go to the Properties palette.
   2. In the Lower Slope section of the Properties palette, enter the desired rise in the Rise box.
6. To remove the overhang from the “high side” of the roof:
   1. Highlight the roof.  Right-click and select Edit Edges/Faces.
   2. At the Select a roofedge prompt, pick the roof edge that is to have the overhang eliminated.  Press ENTER when finished selecting edges, if there are multiple edges.
   3. In the area labeled Roof Edges, pick and highlight the dimension directly under the (B) Overhang button. Enter 0 (zero) for no overhang.
   4. Pick the OK button to exit the dialog box.
7. Get the walls to extend up to the roof:
   1. Highlight the desired walls, right-click, and selecting Roof/Floor Line -> Modify Roof Line from the context sensitive menu.
   2. At the RoofLine prompt, type A for Auto-project.
   3. At the Select objects: prompt, select the Roof object to project the selected walls up to the roof.  Press ENTER to exit the command.

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