ADAAG Manual

Other Requirements [4.11.2]

Platform lifts must comply with all applicable state and local codes and with the ASME A17.1 Safety Code for Elevators and Escalators, Section XX (1990). The ASME code provides specifications for vertical wheelchair lifts and inclined wheelchair lifts. (It also covers inclined stairway chairlifts, but this type of lift, if the chair is fixed in place, does not meet ADAAG requirements for a platform that accommodates wheelchairs). Questions on the ASME standard should be directed to the American Society of Mechanical Engineers at (212) 705‒8500.

Vertical Wheelchair Lifts

Vertical lifts are intended for people who use wheelchairs although others may be able to use them under the ASME code if a seat is provided. However, if a fixed seat is provided, the minimum space required for wheelchairs must still be provided. Folding or flip-down seats can be used. The ASME code specifies a maximum travel distance of 12 feet and prohibits penetration of floors.

Inclined Wheelchair Lifts

Inclined wheelchair lifts, which are often installed along stairways, provide a platform accommodating a person using a wheelchair or scooter. Codes generally prohibit inclined lifts from reducing the required width of egress routes. The ASME standard allows inclined lifts with enclosures and those without. Those not enclosed, which art often stowed in a folded position, must be attendant-operated under the ASME standard. ADAAG's requirement for independent operation [4.11.3] prohibits most, if not all, lifts that must be operated by an attendant.

Platform Size and Surface

To be part of an accessible route, lift platforms must provide the amount of clear space required for wheelchairs in ADAAG 4.2.4. The minimum dimensions are based on the approach. Where entry and exit are on the narrow dimension, the space must be at least 36 inches wide and at least 48 inches long. Where entry and exit are at a right angle to each other, the space must be at least 60 inches long so that maneuvering room for the necessary turn is provided. Platform surfaces must be firm, stable, and slip-resistant as required in 4.5. In addition, changes in level between ¼ to ½ inch must be beveled with a slope 1:2 maximum; changes in level more than ½ inch must be treated as a ramp.

Operation

Platform lifts must be independently usable. Lifts that are required to be "attendant-operated” by the ASME code, such as inclined wheelchair lifts that are not enclosed, do not meet this requirement. All lifts addressed by Chapter XX of the ASME code are required to be key operated. Permanently fixed keys can provide the level of "unassisted" use and operation required by ADAAG. (Issuance of keys to specific individuals is acceptable for lifts serving incidental, not public, spaces used by a specific set of users, often employees). Controls must meet requirements in 4.27 for controls and operating mechanisms.