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3 X 5 Rule

3 X 5 Rule

ASME A17.1 Rule 5.3.1.4.2 States: The clearance between the hoistway doors or gates and the hoistway edge of the landing sill shall not exceed 3 inches (76mm). The distance between the hoistway face of the landing door or gate and the car door or gate shall not exceed 5 inches.

  • AVOID USING CONCRETE BLOCK AND 2 X 6 FRAMING FOR HOISTWAY DOOR WALLS. THIS WILL REQUIRE DOORS TO BE RECESSED TO MEET 3 x 5 RULE.
  • AVOID METAL DOOR CASINGS AS THEY MAY CAUSE 3 x 5 RULE VIOLATIONS.
  • AN OUT OF PLUMB SHAFTWAY WILL GREATLY AFFECT RUNNING CLEARANCES AND MAY CREATE 3 x 5 CODE VIOLATIONS.
  • 3 X 5 RULE AND OTHER CODE VIOLATIONS CAN BE EASILY AVOIDED BY ENGAGING YOUR LOCAL ELEVATOR INSTALLATION PROFESSIONAL EARLY IN THE DESIGN STAGE OF YOUR PROJECT.