|Parts:||Frames, Nuts, Bolts, Plates|
|Techniques:||Tri joints, Shelf joints, Bolting, Triangles|
An accessibility ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height. Ramps for accessibility may predate the wheelchair and are found in ancient Greece.