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Characterized as a low wall, the parapet projects above the roof plane and typically spans around the perimeter of the roof area. Histori-cally, parapets were constructed of masonry, consisting of multi-wythe walls with mortar-fi lled collar joints, capped with a coping. Usually unreinforced, these masonry walls were built to withstand environmen-
pets were constructed of masonry, consisting of multi-wythe walls with mortar-filled collar joints, capped with a coping. Usually unreinforced, these masonry walls were built to withstand environmental forces by relying on the weight of the wall. Due to construc-tion failures and the development of new materials and building systems,
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 ).
May 10, 2022 · Describe the design of parapet components, including copings, cladding, sealants, mortar joints, in-wall flashings, and vapor barriers, and explain how each functions to protect wall and roof assemblies from water infiltration.
Historically, parapets were constructed of masonry, consisting of multi-wythe walls with mortar-filled collar joints, capped with a coping. Usually unreinforced, these masonry walls were built to withstand environmental forces by relying on the weight of the wall.
Parapet walls are often extensions of the structure’s main wall and act as a barricade or railing on the roof. Many parapets have built in drainage systems called scuppers, making them significant for flat roof design and construction.
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The paneled parapet Masonry wall is the oldest type of wall and is similar to the plain parapet. The only variation is that it has added detail of ornamental panels facing outwards on display. The panels may be oblong or square but no perforations are provided in this type of parapet.
