Umphezulu womkhusane womnyango wesivalo esingenamlilo wenziwa ngezinto ezingezizo ezentsimbi, ezinomphezulu obhityileyo womkhusane, indawo encinci yokuhlala kunye nengxolo ephantsi xa isetyenziswa. Ilaphu lomnyango we-shutter elingenamlilo alifuni ukugcinwa kwamanzi okutshiza, okunciphisa utyalo-mali lweprojekthi kunye nokuhlala kwendawo yenkqubo yokutshiza.