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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.
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.
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.
A conductive bar of copper or zinc coated steel mounted on the ridge or a roof or on the parapet of a building connected to a large capacity conductor, usually copper, routed to a ground rod driven into the earth for the purpose of safely directing electrical charges caused by a lightning strike to the ground to avoid damage or fire to the ...
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.
a situation offering no escape, as a difficulty without solution, an argument where no agreement is possible, etc.; a deadlock. [34] ingénu(e) an innocent young man/woman, used particularly in reference to a theatrical stock character who is entirely virginal and wholesome. L'Ingénu is a famous novella written by Voltaire.