Which option describes Landing Door Specifications?

• A. Landing Door Specifications
• B. Runway Definition
• C. Plumb Hoistway
• D. Pressure Sensing Device

Answer: (A)

Landing door specifications cover the set of requirements for the doors at the top and bottom landing of an escalator, including size, clearances, mounting details, hardware and interlocks, sensors, and testing criteria. These specs ensure the doors fit correctly with the hoistway and steps, seal properly, and work with safety devices that stop the escalator if a door is obstructed. The other terms refer to different concepts: a definition of the travel runway, the vertical alignment of the hoistway (plumb), and a device that detects pressure—none of which describe the documentation for landing doors. So the phrase “Landing Door Specifications” is the description of the landing door documentation.