There are several types of roof structures used in building design, including:
1. Flat Roof: This type of roof structure is horizontal or almost horizontal and is often used in commercial and industrial buildings.
2. Shed Roof: This type of roof is a single sloping roof which is commonly used in residential and commercial buildings.
3. Gable Roof: This is a roof that has two sloping sides that meet at the ridge or the apex.
4. Hip Roof: This is a roof that has four sloping sides that meet at an apex.
5. Mansard Roof: This is a roof that has four sloping sides, and the lower two sides are steeper than the upper two sides.
6. Gambrel Roof: This type of roof has two sides, each with two pitches. The lower pitch is steeper than the upper pitch.
7. Butterfly Roof: This type of roof resembles a butterfly's wings and is commonly used in modern homes and buildings.
8. Domed Roof: This is a roof that is shaped like a dome and is commonly used in areas with heavy snowfall or rainfall.
9. Saw-Tooth Roof: This is a roof that has two or more parallel vertical roofs facing in opposite directions, usually used in industrial buildings.
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