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External Walls
Published in Roy Chudley, Roger Greeno, Karl Kovac, Chudley and Greeno’s Building Construction Handbook, 2020
Roy Chudley, Roger Greeno, Karl Kovac
A parapet is a low wall projecting above the level of a roof, bridge or balcony forming a guard or barrier at the edge. Parapets are exposed to the elements, justifying careful design and construction for durability.
Seismic Evaluation and Rehabilitation of Existing Buildings
Published in Bungale S. Taranath, Tall Building Design, 2016
Building ornamentation such as parapets, cornices, signs, and other appendages are another potential falling hazard during strong ground shaking. Unreinforced masonry parapets with heights greater than 1½ times their width are particularly vulnerable to damage. Parapets are commonly retrofitted by providing bracing back to the roof framing.
Wind induced pressures on a large low-sloped gable roof building with parapet
Published in Architectural Science Review, 2023
Aly Mousaad Aly, Matthew Thomas
Figure 10 plot the maximum mean and 95% peak pressure coefficient based on each ASCE-defined zone regardless of wind angle. By inspection, a 3 ft parapet is deemed most effective at reducing mean and peak pressure coefficients in all zones regardless of the wind angle. The height/eave-height ratio for the 3 ft parapet is 0.14, which is in the range that studies in parapet height optimization have concluded to be optimal. Similar to other studies, the 6 ft parapet showed relatively no additional benefit to the 4.5 ft parapet. The 6 ft parapet was only more efficient at reducing just the peak pressure coefficients in zone 2 when compared to the 4.5 ft case. This finding reinforces the fact that after a certain height, the effectiveness of parapets plateaus and sometimes decrease.