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A wheelchair ramp can be permanent, semi-permanent or portable. Permanent ramps are designed to be bolted or otherwise attached in place. Semi-permanent ramps rest on top of the ground or concrete pad and are commonly used for the short term. Permanent and semi-permanent ramps are usually of aluminum, concrete or wood. Portable ramps are ...
To provide access for the wheelchair user, the floor on side-entry vehicles is lowered 8–12 in (203–305 mm). In rear-entry configuration, the floor is not lowered but rather removed and a composite or steel tub is inserted. Ramps come in two styles: fold-up or in-floor and two operating modes: manual or motorised.
The rails are, necessarily, of heavy construction to support the load and the drive system is usually accommodated within a tubular section rail or aluminum extrusion. Some models have steel cables inside the tube, others have chains; yet others may use a rack and pinion system. Many wheelchair platform stairlifts are designed and built to order.
The bridge plate extends from the vehicle to the platform, which must be raised to close to the level of the floor of the vehicle so that the wheelchair need not travel over an excessively steep ramp (in the United States, the Americans with Disabilities Act specifies that the slope must be no more than 1 inch of rise for every 12 inches of ...
A wheelchair lift in the front door of a TriMet bus in Portland, Oregon, in 2010 A bus in Prague with wheelchair lift extended, 2006. A wheelchair lift, also known as a platform lift, or vertical platform lift, is a fully powered device designed to raise a wheelchair and its occupant in order to overcome a step or similar vertical barrier.
An example of barrier-free design would be installing a ramp for wheelchair users alongside steps. In the late 1990s, any element which could make the use of the environment inconvenient for people with disabilities was (and still is) considered a barrier, for example, poor public street lighting. [ 15 ]
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