(a) In a Class U1 or U2 District, for every residential building erected, there shall be a side yard along each side lot line.
(1) In a Class U1 District, the dimension of each side yard shall be not less than three feet, and at least 20% of the mean width of the lot shall be devoted to side yards but not more than 16 feet need to be so devoted.
(2) In a Class U2 District, the dimension of each side yard shall be not less than one-sixth of the height of the building.
(b) In a Class U3, U4 or U5 District, no side yard shall be required, except that where the side line of the lot adjoins a Class U1 or U2 District the side yard shall be not less than one-sixth the height of the building.
(c) A motel with exterior windows in a side wall shall have a side yard equal to 25% of the height of such exterior wall. A motel with no exterior windows in a side wall may have such side wall built on the property line, providing the adjoining property is not in a U1 or U2 Use District, in which case the requirements of division (b) above shall govern.
(d) In a Class U6 District, no side yard shall be required, except that where the side line of the lot adjoins a Class U1 or U2 District the side yard shall be not less than 25 feet.
(Ord. 4761, passed 11-17-1953; Ord. 4881, passed 8-23-1955; Ord. 5547, passed 4-21-1964)