This British Standard provides minimum recommendations for safety in the design, construction, installation, operation, and maintenance of fixed powered lifting platforms with either a partially or fully enclosed platform.
The lifting platforms covered by this code of practice are for use by persons with impaired mobility, whether sitting, standing, or within a wheelchair, and accompanied by an attendant, if necessary, for transportation between fixed levels, and in which the maximum height of the platform above the lowest level does not exceed the following:
a) without liftway enclosure or floor penetration:
1) 2.0 m in public buildings;
2) 4.0 m in private dwellings; or
b) with a liftway enclosure: 4.0 m.
This code of practice also provides some recommendations for consideration by purchasers (see 5.4 and 8.4 and annex A).