A parapet wall is a low wall constructed above the roof that normally extends across the perimeter of a building they are normally enclosing roof or protecting barrier on the fringe of a roof or bridge.
Parapet wall roof construction.
A parapet roof is simply put when a building s outermost walls extend upwards past the roof around the edges most often by a few feet.
Parapets often go unnoticed on modern houses as they can appear as the line of a flat roof.
Different types of parapet walls and their uses are discussed below.
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Parapet walls can be constructed using different materials like reinforced cement concrete steel aluminium glass etc.
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.
Cold flat roof construction explained duration.
A parapet wall is a low or dwarf wall built along the edge of the roof terrace walkway balcony etc.
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Parapets dramatically reduce these pressure differences at roof edges figure 3.
Flat roof with parapet wall.