(1) In every place wherein, more than fifty female building workers are ordinarily employed, there shall be provided and maintained a suitable room or rooms for the use of children under the age of six years of such female workers.
(2) Such rooms shall- (a) provide adequate accommodation;
(b) be adequately lighted and ventilated;
(c) be maintained in a clean and sanitary condition;
(d) be under the charge of women trained in the care of children and infants.