A contract shall contain special clauses covering in substance the following:
   (A)   That it is executed subject to the ordinances of the city (when letting is pursuant to an ordinance).
   (B)   That the Mayor or other authorized officer of the city may suspend the work, and the City Council may annul the contract for the failure of the contractor to perform it according to its terms, provided that such suspension or annulment shall not affect the right to cover damages on account of such nonperformance.
   (C)   That no payment shall be made, or liability incurred, under such contract for any extra work not specified therein, unless agreed to in advance and in writing by the city.
(Ord. 2011-5318, passed 4-5-2011; Am. Ord. 2011-5319, passed 4-12-2011)