
    396 A.2d 831
    Dix, et ux., Appellants, v. The City of Pittsburgh et al.
    Argued October 25, 1978.
    John G. Arch, for appellant; Paul D. Kruper, for appellee, Crowe; Mead J. Mulvihill, Jr., for appellee, The City of Pittsburgh.
    Before PRICE, HESTER and WATKINS, JJ.
   Judgment affirmed.  