In the two examples shown below the wall plans are identical apart from the parapet wall in roof b yet the two roof shapes are quite different as indicated by the roof lines on the plan drawings.
Drawing a floor or a roof on a different plane.
This means that you have an imaginary plane cutting through the building at an elevation of 4 feet above the floor.
Paring these roof types with the appropriate architectural style is recommended for a home to obtain design harmony and curb appeal.
Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss.
Keep it simple stupid.
For each offset angle or change in plate.
A ridgeline marks the apex of each of the three roof sections on this roof plan.