a copy constructor and an assignment operator shall be declared for classes that contain pointers to data items or nontrivial destructors.
  line no : 41  : class b2geomsvdladderrib:public b2geomvxdvolume
  line no : 59  : class b2geomsvdladderribs:public b2geomvxdvolume
  line no : 83  : class b2geomsvdladdercoolingpipe:public b2geomvxdvolume
  line no : 104 : class b2geomsvdladder
