No person making an opening in a street, alley or public place shall fail to guard the same fully during the period of construction. No person causing any such opening to be used, or the user thereof, shall fail to guard or barricade the same while in use, so as to protect the safety of the public. No person using any street opening, or causing the same to be used, shall fail to close the opening in accordance with the directions of the City Engineer immediately after use.
(Prior Code, § 32-33) Penalty, see § 10.999