Description of Figures
Two line drawings. On the left a drawing with a front view of a blind person using a cane. An overhead sign "Lobby" is mounted so the bottom edge is 80" min. above the floor. Wall-mounted objects above 27" cannot protrude more than 4".
On the right, the drawing shows the same blind person and a wall-mounted object with the bottom edge at 27" or lower. The object can protrude any amount if the bottom edge is 27" or lower.