Where it is impracticable or impossible to provide an accessible lift or a ramp in an existing building, vertical or inclined lifting platforms should be provided as a reasonable alternative for vertical circulation within the building. These are special passenger elevating devices for persons with disabilities. These may have either vertical or an inclined movement. These shall be able to be used safely, independently and also with an accompanying person. All control devices shall also be accessible and usable for powered wheelchair and walking aids users. If driving, guiding or lifting mechanisms present hazards at the sides of a platform, the mechanisms shall be guarded to protect the users. The guarding shall be smooth, hard and continuous.
B-6.6.2 Vertical Lifting Platforms (see Fig. 60)
For maximum level changes of 2 500 mm, vertical lifting platforms may be installed. For level changes of more than 1 200 mm, the lift shall be placed in a closed structure with doors at different accessible levels. Vertical lifting platforms may have a variety of openings for entry and exit.