Joseph DiPiazza;82;formerly of Route 88;Roscoe and currently residing in Washington;Pa.;died Wednesday;Nov.1;1995;in the Washington County Health Center;Washington;Pa.  He was born in Italy;Jan.18;1913;a son of the late Frank Sr.and Josephine Catalano DiPiazza.  Mr.DiPiazza retired from Wheeling-Pittsburgh Steel;Allenport Plant.  He was Catholic by faith.  Surviving are his daughter;Mary Ann DiPiazza of  Washington;Pa.;two brothers;Dominick DiPiazza of North Charleroi and Sam DiPiazza of Monessen;and three sisters;Francis Taravella and Lena Rotollo;both of Monessen;and Eleanor Davis of Lynnwood.  In addition to his parents;he was preceded in death by his wife;Dena DiPiazza in 1983;four brothers;Frank;Pete;Ralph and Michael DiPiazza;and a sister;Josephine Kluz.  Friends will be received in the Ed Melenyzer Funeral Homes Inc.1008 Furlong Ave.;Roscoe;Thursday from 2 to 4 and 7 to 9 p.m.  Funeral services will be held Friday in the funeral home at 10 a.m.  Interment will follow in Belle Vernon Cemetery;Belle Vernon.  The Ed Melenyzer Funeral Homes Inc.is in charge of the arrangements.