Homeowners' Training

Operation & Safety

Hall Door To Car Gate Clearances: “3 & 5 Rule”

In jurisdictions that have adopted the 2013 or earlier edition of the ASME A17.1/CSA B44 the minimum clearances between the hall door and the car gate are specified, commonly referred to as the “3 & 5” rule. Under this code the hall door must not be set back from the inside of the hoistway more than 76mm ( 3 in.) and the maximum clearance between the hall door and the car gate shall not exceed 127mm ( 5 in.).