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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 ...
Ladder stabilizers are also available to increase the ladder's grip on the ground. One of the first ladder stabilizers or ladder feet was offered in 1936 and today they are standard equipment on most large ladders. [8] A ladder standoff, or stay, is a device fitted to the top of a ladder to hold it away from the wall.
The dimensions of a stair, in particular the rise height and going of the steps, should remain the same along the stairs. [14] The following stair dimensions are important: The rise height or rise of each step is measured from the top of one tread to the next. It is not the physical height of the riser; the latter excludes the thickness of the ...
At a maximum interval of eight steps, the standard step is replaced by a spreader, which is an elongated version of the standard machined step, with a minimum length of 1.8 m (5 ft 11 in). The spreader's function is to prevent the ladder from twisting in the prevailing weather conditions when in use.
DIN 4420, a DIN standard divided in 5 parts which covers the design and detail of scaffolds, ladder scaffolds, safety requirements and standard types, materials, components, dimensions and loadbearing capacity.
Turntable ladders and similar fire fighting vehicles; Turn table ladders, engine driven: Withdrawn: DIN EN 14043, DIN EN 14044: EN 14043, EN 14044: DIN 14701-3: Turntable ladders and similar fire fighting vehicles; Rescue baskets: Withdrawn: DIN EN 1777: EN 1777: DIN 14702: Turntable ladder DL 16–4, hand operating: Active: DIN 14703: Trailer ...
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