913.12 ENGINEERING COMMISSIONER AUTHORIZING WORK DONE.
   (a)   If a sidewalk is not constructed, or if a defective sidewalk is not reconstructed or repaired or freed from nuisance within the period of time permitted by the notice to the owner of the abutting property, the Engineering Commissioner shall cause the work to be done by contract, in conformity with Section 913.01 or by City forces, or both, and the entire cost shall be charged against the property.
   (b)   In case of emergency, the Engineering Commissioner is authorized to have temporary repairs made, or to barricade and red-light the area, or otherwise provide for public safety. The cost of all such emergency repair and protection shall be charged against the abutting property and shall be collected as provided in Section 913.13. (1967 Code §95.81)