In Manufacturing and Mixed Use Districts, the provisions of Section 43-304 (Required front yards along district boundary located in a street) shall not apply.

In Commercial, Manufacturing, and Mixed Use Districts, the underlying yard requirements applying along district boundaries of Sections 33-292 (Required yards along district boundary coincident with rear lot lines of two adjoining zoning lots), 33-293 (Required yards along district boundary coincident with side lot line of zoning lot in a Commercial District), 43-302 (Required yards along district boundary coincident with rear lot lines of two adjoining zoning lots) and 43-303 (Required yards along district boundary coincident with side lot line of zoning lot in a Manufacturing District), shall be superseded by the provisions of this Section as follows:

(a)        When side or rear lot lines coincide with a side lot line of a zoning lot in an adjoining Residence District, an open area not higher than curb level, and at least eight feet in depth, shall be provided; and

(b)        Where side or rear lot lines coincide with the rear lot line of a zoning lot in an adjoining Residence District, an open area not higher than 30 feet above base plane and at least 20 feet in depth, shall be provided.