A ladder is a vertical or inclined set of rungs or steps. more...
There are...
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A ladder is a vertical or inclined set of rungs or steps. more...
There are two types: rigid ladders that can be leaned against
a vertical surface such as a wall, and rope ladders that are
hung from the top. The vertical members of a rigid ladder are
called beams (US) or stiles (UK). With a bit of agility, one
can slide down the stiles without climbing down each rung.
Rigid ladders are usually portable, but some types are
permanently fixed to buildings.Rigid ladders were originally
made of wood, but in the 20th century tubular aluminium became
more common because of its lighter weight. Ladders with
fiberglass stiles are used for working on or near overhead
electrical wires, because fibreglass is an electrical
insulator.
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