(410 ILCS 650/3) (from Ch. 56 1/2, par. 69)

Sec. 3. The sidewalls and ceilings of every bakery, confectionery, creamery, cheese factory, and hotel or restaurant kitchen shall be so constructed that they can easily be kept clean; and every building, room, basement or inclosure occupied or used for the preparation, manufacture, packing, storage, sale or distribution of food shall have an impermeable floor made of cement or tile laid in cement, brick, wood or other suitable material which can be flushed and washed clean with water.

(Source: Laws 1911, p. 528.)