§ 101.18  EXCAVATION NEAR STREETS AND SIDEWALKS.
   All excavations upon the front or side of any lot adjoining a street or avenue or alley or under any sidewalk in the city shall be securely and properly guarded and protected by the person or persons having charge of the same, so as to prevent the same being or becoming dangerous to life and limb.
(`83 Code, § 14-118)  Penalty, see § 101.99