Detailing masonry parapets

By Walter LaskaS t a ff Arc h i t e cM a s o n ry Advisory CouncilPark Ridge, IllinoisAparapet wall is the portion of awall that extends above theroof. Its purpose might be aes-thetic, hiding mechanical equipmentand providing a distinct roof line. Orit can be functional, helping to preventflames from spreading from rooftop torooftop. Codes often require parapetsfor this parapet walls have two ex-posed surfaces, they can suffer seriousproblems. Both sides of the wall aresubjected to temperature swings andrain. In northern regions, snow driftsup against the walls, further increasingthe possibility of moisture conditions are more severe thanthose that building walls in moderateclimates are subjected to.

tailing parapets are illustrated here. Coping The top of a parapet wall is the most vulnerable area. Developing an eff e c - tive detail here helps eliminate or min-imize most moisture-related problems. Choosing an appropriate cap is the first step in doing this. Although a variety of copings are available to cap off the wall, a coping

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  Masonry, Detailing, Coping, Parapets, Detailing masonry parapets

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