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  2. John H. Balsley - Wikipedia

    en.wikipedia.org/wiki/John_H._Balsley

    The title of Ladder Keeper does not appear after 1831 (although there is a gap in records from 1835 to 1856). William Balsley, an uncle, was on the town council at the time the office was created. Although none of his family seems to have held this new office, one can only speculate whether it somehow stimulated an interest in ladders on the ...

  3. Step stool - Wikipedia

    en.wikipedia.org/wiki/Step_stool

    Step stool with 2 steps. Step stools are halfway between a ladder and a stool, being used, as a support platform, for reaching targets that are at heights between ~2m and ~3m. The most common modern type is made with two separate ladders connected to each other at the upper end, where there is a platform with an area big enough to stand with ...

  4. Ladder - Wikipedia

    en.wikipedia.org/wiki/Ladder

    An extension ladder. A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall, and rollable ladders, such as those made of rope or aluminium, that may be hung from the top.

  5. Fixed ladder - Wikipedia

    en.wikipedia.org/wiki/Fixed_ladder

    Fall protection system: Fixed ladders above 24' must have a fall protection system in accordance with OSHA Standard 1910.28(b)(9)(i)(C). Cages are not anymore considered as fall protection, and ladders that are newly installed or replaced after November 19, 2018, must have a fall protection system based on OSHA's new fixed ladder requirements.

  6. Three Steps - Wikipedia

    en.wikipedia.org/wiki/Three_Steps

    The Second Step is the best known of the rocky steps. The steep section, at an altitude of 8,610 m, has a climbing height of 40 metres (130 ft), of which the last five are almost vertical. The steep section, at an altitude of 8,610 m, has a climbing height of 40 metres (130 ft), of which the last five are almost vertical.

  7. Crossed ladders problem - Wikipedia

    en.wikipedia.org/wiki/Crossed_ladders_problem

    The short ladder in the complex solution in the 3, 2, 1 case appears to be tilted at 45 degrees, but actually slightly less with a tangent of 0.993. Other combinations of ladder lengths and crossover height have comparable complex solutions. With combination 105, 87, 35 the short ladder tangent is approximately 0.75.

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