// CODE SNIPPET
403.5 Bracing for Unreinforced Masonry Parapets Upon Reroofing
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Where the intended alteration requires a permit for reroofing and involves removal of roofing materials from more than 25 percent of the roof area of a building assigned to Seismic Design Category D, E or F that has parapets constructed of unreinforced masonry, the work shall include installation of parapet bracing to resist out-of-plane seismic forces, unless an evaluation demonstrates compliance of such items. For purposes of this section, design seismic forces need not be taken greater than 75 percent of those that would be required for the design of similar nonstructural components in new buildings of similar purpose and location.
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403.5 Prescriptive Compliance Method, Bracing for Unreinforced Masonry Parapets Upon Reroofing
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