What term describes vertical distance in feet per minute?

• A. Vertical Speed
• B. Horizontal Speed
• C. Riser Calculation
• D. Incline Speed

Answer: (A)

Vertical speed is the rate at which the escalator moves in the vertical direction, measured in feet per minute. It directly describes how quickly the platform rises or falls, focusing only on vertical displacement over time. This differs from horizontal speed, which would describe movement along the floor, and from incline speed, which would refer to speed along the entire inclined path. Riser calculation, on the other hand, relates to the vertical rise per step, not the rate of movement. So describing vertical distance per minute naturally uses vertical speed. If you know how many feet you gain per minute, you know exactly how fast you’re ascending or descending. For example, vertical speed can be found by the vertical rise per step multiplied by the steps per minute, tying together the step geometry with the movement rate.