Wilmington Office

Phone: (910) 790-9300

Mailing address:
5704 Nixon Lane
Castle Hayne, NC 28429

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Elevator Safety

3″ x 5″ Rule (Code prior to 2016)

The ASME A17.1/CSA-B44–Safety Code for Elevators and Escalators Section 5.3, mandates the following maximum hoistway door clearances.

  • Clearance between the hoistway side of the landing door and the edge of the landingsill shall not exceed 3” (76mm).
  • Distance between the hoistway face of the landing door or gate and the car door or gate shall not exceed 5” (127mm).

3/4″ x 4″ Rule (Code 2016 and after)

The ASME A17.1-2016/CSA B44-16 Safety Code for Elevators and Escalators Section 5.3, mandates the following maximum hoistway door clearances.

  • Clearance between the hoistway side of the landing door and the edge of the landing sill shall not exceed 0.75” (19 mm) for swing doors (shown below) and 2.25” (57 mm) for sliding doors.
  • Distance between the hoistway side of the landing door or gate and the car door or gate shall not exceed 4” (102mm).