(a) No person using or occupying any cellar, the door to which opens on any street, alley, walk or public square of the City, shall allow such door to remain open at any time unless the same be properly guarded by railing and lighted at night.
(b) Every person owning, using or occupying any cellar having a stairway therefrom, or any area opening into a street, alley or public square, shall properly secure such stairway by a door or grating covering the whole opening into such street, alley or public square.