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  2. Fixed ladder - Wikipedia

    en.wikipedia.org/wiki/Fixed_ladder

    Stand-off brackets: Dictated by OSHA Standard 1910.27(c)(4) stand-off brackets must be at least 7" (180 mm) longer than the farthest obstruction for clearance on the back side of ladder. This means that if there is a 4" (100 mm) gutter projecting from the side of a building, a fixed ladder would have to have standoff brackets that were at least ...

  3. Scaffolding - Wikipedia

    en.wikipedia.org/wiki/Scaffolding

    Scaffolding for rehabilitation in Madrid, Spain [1] Scaffolding for renovation on the Virgin Mary statue, Santiago de Chile, Chile.. Scaffolding, also called scaffold or staging, [2] is a temporary structure used to support a work crew and materials to aid in the construction, maintenance and repair of buildings, bridges and all other human-made structures.

  4. Domestic roof construction - Wikipedia

    en.wikipedia.org/wiki/Domestic_roof_construction

    The blue pieces are roll formed metal roof battens or purlins. This roof is built with purpose-made steel hook bracket which is bolted to the truss with M16 bolt. The bracket is bolted to an M16 bolt cast in situ, embedded 300 mm (12 in) into the reinforced concrete block wall.

  5. 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.

  6. New York City Fire Department Ladder Company 3 - Wikipedia

    en.wikipedia.org/wiki/New_York_City_Fire...

    New York City Fire Department Ladder Company 3, also known as Ladder 3, is a fire company and one of two ladder companies in the New York City Fire Department's (FDNY) 6th Battalion, 1st Division. It is housed at 108 E. 13th St., along with Battalion Chief 6, and has firefighting stewardship over a several square block area of Manhattan ’s ...

  7. Jacob's Ladder - Wikipedia

    en.wikipedia.org/wiki/Jacob's_Ladder

    Picture of the Jacob's Ladder in the original Luther Bibles (of 1534 and also 1545). Jacob's Ladder (Biblical Hebrew: סֻלָּם יַעֲקֹב ‎, romanized: Sūllām Yaʿăqōḇ) is a ladder or staircase leading to Heaven that was featured in a dream the Biblical Patriarch Jacob had during his flight from his brother Esau in the Book of Genesis (chapter 28).