[Code 1955, § 5-1.9]
(a)
No person shall maintain, use or operate any trapdoor, coal hole or other sidewalk unless the doors or covers for such opening shall be of metal or reinforced concrete with nonslipping wearing surface and unless the surfaces thereto shall be flat with the surface of sidewalk, and shall present no hazard to traffic.
(b)
No coal hole, trapdoor or other sidewalk opening shall be allowed to remain open, except when actually in use.
(c)
When any coal hole, trapdoor or other sidewalk opening is open, such opening shall be protected by guards, not less than 32 inches in height and fully protecting all sides of the opening; provided, however, that the guard on the loading side may be removed therefrom during the period of loading and unloading.