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A parapet is a barrier that is an upward extension of a wall at the edge of a roof, [1] terrace, balcony, walkway or other structure. The word comes ultimately from the Italian parapetto (parare 'to cover/defend' and petto 'chest/breast').
A parapet wall is a low or dwarf wall built along the edge of the roof, terrace, walkway, balcony etc. Parapet walls can be constructed using different materials like reinforced cement concrete, steel, aluminium, glass etc. Different types of parapet walls and their uses are discussed below.
In parapet architecture, a parapet wall is a protective barrier that extends above the roofline of a building, serving both functional and aesthetic purposes. The primary function of a parapet wall is to prevent people or objects from falling off the roof, while also providing a level of fire protection and concealing rooftop equipment.
When wind blows against a building it produces vortices at the roof edges (Figure 1) that create huge pressure differences (Figure 2) at roof perimeters that can suck roofs off buildings. Parapets dramatically reduce these pressure differences at roof edges (Figure 3). Neat eh?
According to Wikipedia, it is defined as a barrier that is an extension of at the edge of the roof, terrace, balcony, walkway or other structures. Basically, it is a masonry wall constructed in the above-mentioned locations. Why we need parapet walls?
Parapets, frequently referred to as parapet walls, are raised barriers at the edge of a roof. Parapet walls are often extensions of the structure’s main wall and act as a barricade or railing on the roof.
A parapet wall - thanks to its fire-resistant make - works like a firewall and slows down or even stops the spread of flames. It's important to think about safety during repairs. Parapet walls protect workers fixing the roof or putting in equipment.