COMMERCIAL BUILDING DESIGNS have long incorporated exterior soffits, better known outside of the building design and construction industry as the underside of any projecting building feature. Aside from soffits at the eave or rake edges of a steep-slope roof, the soffits that are the focus of this article are located on the underside of a steel- or concrete-frame projecting building level or on the underside of other horizontal projections, such as balconies and canopies.
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