It shall be the duty of all owners, contractors, builders or persons having control or supervision of any or all buildings or parts of buildings in the course of erection to see that all excavations adjacent to public streets or sidewalks shall be covered or properly protected, and satisfactory measures shall be taken to safeguard the public against injury resulting from live boxes, live wires, power tools, insecure scaffolding, falling material, stacked or piled construction material and equipment.
Where a permit has been issued for the temporary use of the street for storage of materials, warning lights shall be displayed and maintained during the whole of every night from dusk to dawn at each end of every pile of such material in the street. Similar warning lights shall be displayed for excavations immediately adjacent to sidewalks or public streets. Failure to comply with the above requirements after 24 hours notice shall be deemed a misdemeanor, and the offender shall be subject to the penalties provided for violation of the Building Code.
(1969 Code 151.43)