§ 29. Painting of courts and shafts. The exterior surface of all walls
of all courts and shafts of multiple dwellings, except of outer courts
opening on a street, and courts having dimensions of at least fifty
percent in excess of the minimum set forth in section twenty-six, shall
be of a lightcolored brick or stone, or be thoroughly whitewashed or
painted a light color by the owner and be so maintained. Such whitewash
or paint shall be renewed whenever necessary, as may be determined and
required by the department.