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An information sign in Nijō castle states that "The singing sound is not actually intentional, stemming rather from the movement of nails against clumps in the floor caused by wear and tear over the years". Legend has it that the squeaking floors were used as a security device, assuring that no one could sneak through the corridors undetected. [1]
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.
The best stair lift for 2025: Chair lifts that make navigating stairs a breeze With 12.2% of Americans struggling to walk or climb stairs, a stair lift can make a major difference in accessibility ...
Stair lifts are used by people of all ages and child car seats can usually be fixed a standard stair lift seat using the seat belt provided with the stair lift system. Many stair lifts are also fitted with a key, to allow the user to prevent others from using the lift. Codes of practice and technical specifications apply to stair lift manufacture.
To avoid confusion, the number of steps in a set of stairs is always the number of risers, not the number of treads. The total run or total going of the stairs is the horizontal distance from the first riser to the last riser. It is often not simply the sum of the individual tread lengths due to the nosing overlapping between treads.
Riser clamp for a standpipe through-penetration firestop inside a fire hose cabinet under construction. A riser clamp is a type of hardware used by mechanical building trades for pipe support in vertical runs of piping (risers) at each floor level. The devices are placed around the pipe, and integral fasteners are then tightened to clamp them ...
At this point, the tracks separate and the steps once again assume a staircase configuration. This cycle is repeated continually as the steps are pulled from bottom to top and back to the bottom again. The steps themselves are solid, one piece, die-cast aluminium or steel. Yellow demarcation lines are sometimes added to indicate their edges.
Stair climbing has developed into the organized sport tower running.Every year several stair climbing races are held around the world with the competitors running up the stairs of some of the world's tallest buildings and towers (e.g., the Empire State Building, Gran Hotel Bali), or on outside stairs such as the Niesenbahn Stairway.