Single slope frames have different eave heights on each sidewall so that the roof of the building "slopes" up from front to back. To describe a single slope design, you specify the eave height of the lower side and then define the pitch or slope of the roof. Roof pitch
is expressed as the number of inches a roof rises vertically for every 12 inches it runs horizontally. Most single slope buildings employ a ? :12 pitch, but they can be steeper. Single slope designs are commonly used for strip shopping centers, offices, and mini-storage complexes.