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2. Stairs - Wikipedia

   en.wikipedia.org/wiki/Stairs

   A stair flight is a run of stairs or steps between landings. A stairwell is a compartment extending vertically through a building in which stairs are placed. A stair hall is the stairs, landings, hallways, or other portions of the public hall through which it is necessary to pass when going from the entrance floor to the other floors of a building.

3. Grade (slope) - Wikipedia

   en.wikipedia.org/wiki/Grade_(slope)

   But in practice the usual way to calculate slope is to measure the distance along the slope and the vertical rise, and calculate the horizontal run from that, in order to calculate the grade (100% × rise/run) or standard slope (rise/run).

4. Inclined plane - Wikipedia

   en.wikipedia.org/wiki/Inclined_plane

   Wheelchair ramp, Hotel Montescot, Chartres, France Demonstration inclined plane used in education, Museo Galileo, Florence.. An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load.

5. Dog-leg (stairs) - Wikipedia

   en.wikipedia.org/wiki/Dog-leg_(stairs)

   A dog-leg staircase A quarter-landing, on a dog-leg staircase, is made into an architectural feature, by the use of arches, vaulting and stained glass. A dog-leg is a configuration of stairs between two floors of a building, often a domestic building, in which a flight of stairs ascends to a quarter-landing before turning at a right angle and continuing upwards. [1]

6. The 10 Best Dog Stairs and Ramps to Give Your Pup a Leg Up - AOL

   www.aol.com/10-best-dog-stairs-ramps-140000042.html

   Amazon. For just $31, this three-step set of stairs is hard to beat. Despite appearances, these stairs are said to hold pets up to 200 pounds (one 150-pound reviewer sat on it to test this claim ...

7. Ramp travel index - Wikipedia

   en.wikipedia.org/wiki/Ramp_travel_index

   "Ramping" a 2003 4Runner without a ramp. RTI calculation diagram. It is possible to calculate RTI without a ramp using basic trigonometry, provided a safe method is available to lift one wheel, say, using a forklift. Using the diagram below, if h is the maximum distance from the bottom of the tire to the ground, then [3]