(Amended by Ordinance No. 176469, effective July 1, 2002.) The length of a primary building wall is derived for each tenant space's ground floor exterior wall. See Figure 1. When walls are not parallel to a street, they are assigned to the street frontage to which they are most oriented. See Figure 10a. When the primary entrance is located in a building wall that is adjacent to, at an angle from, and shorter than the street-facing wall, the primary building wall will be measured as a combination of the street wall and the wall containing the entrance. Where the angled wall is on the corner of the building between two street-facing walls, the applicant may choose which street facing wall to combine with the wall containing the entrance to be considered the primary building wall. The length of the primary building wall will be measured in a straight line parallel to the street-facing wall. See Figure 10b.