17.22.100 Yards.
   Except for setbacks along major streets as required by Chapter 17.86, there shall be established and maintained:
   (A)   For general conditions, the provisions of §§ 17.64.020 through 17.64.040 shall apply;
   (B)   Front yard requirements are as follows: lots shall have a front yard of not less than 25 feet;
   (C)   Side yard requirements are as follows:
      (1)   Lots with no access to an alley shall have one side yard with a width of not less than ten feet, and the other side yard shall have a width of not less than five feet;
      (2)   Lots with access to an alley shall have a side yard on each side of not less than five feet adjacent to the interior side lot lines and not less than ten feet adjacent to street side lot lines;
      (3)   Corner lots siding on a local street shall have a side yard on the street side of not less than 15 feet;
      (4)   Reversed corner lots shall have a side yard on the street side of a width not less than 15 feet. Any additions or enlargements to nonconforming main buildings and structures on reversed corner lots may extend as far as the setback of such buildings or structures, but in no instance shall they extend less than ten feet from the property line;
   (D)   Rear yard requirements are as follows: each lot shall have a rear yard of not less than ten feet.
(`78 Code, § 17.22.100.)