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2. Stair nosing - Wikipedia

   en.wikipedia.org/wiki/Stair_nosing

   The nosing is the protrusion beyond the riser when vertical risers are used, or beyond the back of the tread below, when angled risers or no risers are used. Anti-slip strips or nosings may be applied. These stair parts can be manufactured from a variety of materials including aluminum, vinyl, and wood.

3. Stairs - Wikipedia

   en.wikipedia.org/wiki/Stairs

   The dimensions of a stair, in particular the rise height and going of the steps, should remain the same along the stairs. [14] The following stair dimensions are important: The rise height or rise of each step is measured from the top of one tread to the next. It is not the physical height of the riser; the latter excludes the thickness of the ...

4. Handrail - Wikipedia

   en.wikipedia.org/wiki/Handrail

   A maximum height of 28 inches (711 mm) measured to the top of the gripping surface from the ramp surface or stair nosing is recommended for handrails designed for children. Sufficient vertical clearance between upper and lower handrails, 9 inches (229 mm) minimum, should be provided to help prevent entrapment.

5. Stair tread - Wikipedia

   en.wikipedia.org/wiki/Stair_tread

   A stair tread is the horizontal portion of a set of stairs on which a person walks. The tread can be composed of wood, metal, plastic, or other materials. In residential settings, treads can be covered in carpeting. Stair treads can come in non-slip varieties, particularly in commercial or industrial locations. [1]

6. 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]

7. Overhang (architecture) - Wikipedia

   en.wikipedia.org/wiki/Overhang_(architecture)

   Overhang on 16th century Tomb of Salim Chishti, Fatehpur Sikri, India In architecture , an overhang is a protruding structure that may provide protection for lower levels. Overhangs on two sides of Pennsylvania Dutch barns protect doors, windows, and other lower-level structures.

8. Block-stacking problem - Wikipedia

   en.wikipedia.org/wiki/Block-stacking_problem

   The first nine blocks in the solution to the single-wide block-stacking problem with the overhangs indicated. In statics, the block-stacking problem (sometimes known as The Leaning Tower of Lire (Johnson 1955), also the book-stacking problem, or a number of other similar terms) is a puzzle concerning the stacking of blocks at the edge of a table.

9. Speed climbing wall - Wikipedia

   en.wikipedia.org/wiki/Speed_climbing_wall

   The wall itself has a height of 15000 mm and consists of two lanes, each 3000 mm wide, with a distance of 0 to 1000 mm from each other. The wall stands on a 200 mm socle and must continue 500 mm above the finish button, i.e. above the 15 m. The wall must overhang continuously with an angle of 5°.