According to Table 1-3 in the example, the plain round scupper size is which dimension in inches?

According to Table 1-3 in the example, the plain round scupper size is which dimension in inches?

• A. 2 inches
• B. 3 inches
• C. 4 inches
• D. 5 inches

Answer: (C)

When you read a specification table, you identify the exact size by looking at the type of part and the dimension listed for it. For a plain round scupper, the size is the diameter of the circular opening. In Table 1-3 of the example, the line for a plain round scupper specifies a four-inch diameter. So the plain round scupper is four inches across. This size reflects a balance between providing adequate drainage capacity and fitting typical parapet and flashing details. If drainage needs were greater, a larger diameter would be chosen; for smaller roof areas, a smaller diameter might be selected.

When you read a specification table, you identify the exact size by looking at the type of part and the dimension listed for it. For a plain round scupper, the size is the diameter of the circular opening. In Table 1-3 of the example, the line for a plain round scupper specifies a four-inch diameter. So the plain round scupper is four inches across. This size reflects a balance between providing adequate drainage capacity and fitting typical parapet and flashing details. If drainage needs were greater, a larger diameter would be chosen; for smaller roof areas, a smaller diameter might be selected.