§ 97.011 PROTECTION MEASURES AND ROUTING OF TRAFFIC.
   (A)   It shall be the duty of every person undertaking any construction, including making an excavation in or upon any public place, to place and maintain barriers and warning devices necessary for safety of the general public.
   (B)   For excavations over five feet in depth, blasting operations and tunneling work, the permittee shall, when required by law, obtain a permit from the California Division of Industrial Safety and/or any other permit required by state or federal safety regulations.
   (C)   Barrels, warning signs, lights, and the like, shall conform to the requirements of the Manual of Warning Signs, Lights and Devices for Use in Performance of Work Upon Highways, issued by the state of California, Department of Transportation and to any additional requirements specified by the Administrative Authority. Warning signs shall be placed as described in Article 402 of the Traffic Manual, issued by the State Department of Transportation.
   (D)   The permittee shall take appropriate measures to assure that during the performance of construction work on streets, traffic conditions as near normal as practicable shall be maintained at all times so as to minimize inconvenience to the occupants of the adjoining property and to the general public.
   (E)   When traffic conditions permit, the Administrative Authority may, by written approval, permit the closing of streets and alleys to all traffic for a period of time prescribed by him. The written approval of the Administrative Authority may require that the permittee provide approved detours and give notification to various public agencies and to the general public. In such cases, the written approval shall not be valid until notice is given.
('61 Code, § 18.11) (Ord. 702, passed - - )