When working with the AutoCAD Architecture software, I use its versatile roof commands to create many different types of roofs, from simple to complex and from flat to sloped. Once created, the roofs can be modified by changing their heights and slopes and dormer windows can be added. I can also convert objects into roofs and change the roof edges. This gives me a great deal of flexibility whether creating roofs from scratch or modifying existing ones.
When I want to create a roof, I often draw a simple or complex outline as a polyline or group of walls and then convert it into a roof. This enables me to concentrate on the outline first and then use the modification tools to refine the roof later.
If I want to create a flat roof I use the same process as when I create a sloped roof. The difference is that the Rise for the flat roof is set to a very low number and the Overhang is set to 0". The points I select when creating the roof are on the inside of the exterior walls, enabling the tops of the walls to be used as a parapet.
When I want to modify a roof I use the Properties palette to change its properties, including the Overall Thickness, Pitch, and Overhang. I also use grips to modify the edges of the roof and the locations of the roof vertices. Grips can also be used to change ridge points and fix missed intersections and are very useful when creating gables.
When creating a complex roof plan I draw it in 2D and then convert it into 3D using the AutoCAD Architecture software’s Roof Slab tools. This enables me to have more control over the edges of the roof planes and to create complex fascia and soffits. Roof slabs also enable me to create openings for dormer windows. I can convert roofs, linework, and walls into roof slabs, which is very useful when creating a complex roof. When I need to modify the roof slabs, I use grips, which enable me to change the angle, rise, or run of the slab.
To create a dormer window, I use the Roof Dormer command to fit the dormer walls and roofs into the Main roof. I draw the dormer walls, roof, and windows and then use the Roof Dormer command to add it to the Main roof.