Folding wheelchair ramp
How to make a portable ramp out of a joist.
front porch ramps | Wheelchair Ramp Design Specs for a More Accessible Porch
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Garage wheelchair ramp schematics
Portable wheelchair ramp- just a pic. It looks like plywood and doorway thresholds. Very doable.
Discounted prices on these multifolding portable wheelchair ramps manufactured by PVI
Roll-A-Ramp Portable Wheelchair Ramp - Accessible Construction
Roll-A-Ramp Portable Loading Ramp System from Discount Ramps is SUPER versatile! Can be used for wheelchair or powerchair accessibility, as well as loading motorcycles, ATVs or lawn equipment.
Express Ramps OSHA Portable Stairs - http://www.portable-wheelchair-ramps.com/osha-stairs/osha-stairs.aspx