I use to work for the American Public Works Association, in their
Information Services department. They have their own internal
database on a variety of public works related items including
cleaning management/maintenance articles. I remember pulling
articles for patrons on who to figure out equations for
personnel and cleaning buildings, etc. Although it is not
strictly discussing hospitals, you may get some information
that can be adapted to a hospital setting.

APWA is in Kansas City. Their phone # is 815-472-6100, fax is
816-472-1610. (The first number area code should be 816).