Scupper

A scupper is an opening in the side walls of a vessel or an open-air structure, which allows water to drain instead of pooling within the bulwark or gunwales of a vessel, or within the curbing or walls of a building.

Ship's bulwark and scupper. The scupper hole (8) has a grille cover, with water leading through the scupper pipe (9) to an outlet (10)
"Scuppers" redirects here. For the children's book, see Scuppers The Sailor Dog.
Two scuppers cut into either side of this outdoor stairwell prevent water from building up and making the stairs slippery.

There are two main kinds of scuppers:

  1. Ships have scuppers at deck level, to allow for ocean or rainwater drain-off.[1]
  2. Buildings with railed rooftops may have scuppers to let rainwater drain instead of pooling within the railing. Scuppers can also be placed in a parapet, for the same purpose.[2]

References
  1. "Useful Arts". New Monthly Magazine. 33: 418. 1831. Retrieved 4 November 2019.
  2. Editors (1918). Sweet's Architectural Catalog File. Sweet's Division, McGraw-Hill Information Systems Company. p. 275.CS1 maint: extra text: authors list (link)


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