Transparency requirements for buildings utilizing alternative height measurement

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In the districts indicated, for all buildings utilizing the provisions of Section 64-336 (Alternative height measurement in Commercial and Manufacturing Districts), paragraph (b), street walls shall be glazed with transparent materials which may include show windows, transom windows or glazed portions of doors. Furthermore, such transparent glazing materials shall occupy at least 50 percent of the surface area of such street wall, measured between a height of two feet above the level of the adjoining sidewalk or other publicly accessible open area and a height of 12 feet above the level of the first finished floor above curb level. The floor level behind such transparent glazing materials shall not exceed the level of the window sill for a depth of at least four feet, as measured perpendicular to the street wall.