The cost of any project which is designed by city engineering forces financed wholly or in part by levy of a special assessment pursuant to §§ 36.065 through 36.082 shall be computed by adding to all other costs of the project, engineering, legal and clerical fees computed as follows.
   (A)   An engineering fee in the amount of 10% of the total of the costs to cover survey, design, general supervision, inspection, and administration of the project.
   (B)   A legal and clerical fee in the amount of 1% of the total of the costs.
('58 Code, § (Ord. 75-89, passed 10-7-75; Am. Ord. 76-17, passed 12-16-75)