FIELD: construction.
SUBSTANCE: invention relates to construction, public utilities, production of sport yards and playgrounds and the said structures and, in particular, can be used for production of safe wall and extension ladders, A-shaped ladders, as well as ladders in jungle gyms. Ladder comprises two parallel posts whereto at the angle of 90 degrees equally-spaced and parallel stages are attached. At the lower side of the stages there is a safety element, for example a synthetic cord, a rope or a chain.
EFFECT: technical result is ensuring safety of the user in case of crosspieces destruction.
1 cl, 1 dwg
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