An overflow scupper is set within a nine by eighteen inch rough opening through a concrete tilt-up wall panel. The assembly features a primed twenty-four gauge galvanized iron scupper flashing set in roof cement over the field plies, with flashing and stripping plies installed over nailed flanges at four inches on center. A four-inch perlite cant strip supports a single-ply flashing sheet at the roof edge. A twenty-two gauge galvanized iron scupper, painted to match the building, extends through the opening with approved sealant applied at the panel joints. Dimensions indicate a twenty-four inch overall scupper width with specific clearances and setbacks around the penetration.
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