
    Francis J. McCallin et al., Individually and on Behalf of All Persons Similarly Situated, Appellants, v Jeremiah T. Walsh, as Commissioner of the Buildings Department of the City of New York, et al., Respondents. Beckrose Estates et al., Appellants, v John T. O’Hagan, as Commissioner of the Fire Department of the City of New York, et al., Respondents. 49-50 Associates et al., Appellants, v John T. O’Hagan, as Commissioner of the Fire Department of the City of New York, et al., Respondents. Melvyn Kaufman et al., Appellants, v John T. O’Hagan, as Commissioner of the Fire Department of the City of New York, et al., Respondents.
    Argued November 29, 1978;
    decided December 21, 1978
    
      APPEARANCES OF COUNSEL
    
      William M. Kufeld, Lewis Bart Stone and Norman Flitt for appellants in the first above-entitled action.
    
      Harold Dublirer for appellants in the second, third and fourth above-entitled actions.
    
      Allen G. Schwartz, Corporation Counsel (Morris Einhorn and L. Kevin Sheridan of counsel), for respondents.
    
      Bernard S. Meyer and Jeffrey G. Stark for New York Sprinkler Contractor’s Association, amicus curiae.
    
   OPINION OF THE COURT

In each case: Order affirmed, with costs, on the opinion by Mr. Justice Joseph P. Sullivan at the Appellate Division (64 AD2d 46), noting that the order at the Appellate Division incorporated the prevailing opinion in that court (see CPLR 5712, subd [c], par 2).

Concur: Chief Judge Breitel and Judges Jasen, Gabrielli, Jones, Wachtler, Fuchsberg and Cooke.  