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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 ...
The roof height was now 1,250 feet (380 m), making it the tallest building in the world by far, even without the antenna. [ 195 ] [ 42 ] [ 196 ] The addition of the dirigible station meant that another floor, the 86th, would have to be built below the crown; [ 196 ] however, unlike the Chrysler's spire, the Empire State's mast would serve a ...
The ladders are made by threading and fixing a series of hardwood, machined steps, each not more than 400 mm × 115 mm × 25 mm (15.75 in × 4.53 in × 0.98 in), onto two pairs of minimum 18 mm (0.71 in) diameter manila ropes, and binding each step to the ropes at 310 ± 5 mm (12.20 ± 0.20 in) intervals.
The minimum height of the handrail for landings may be different and is typically 36 inches (914 mm). Handrail diameter. The size has to be comfortable for grasping and is typically between 1.25 and 2.675 inches (31.8 and 67.9 mm). Maximum space between the balusters of the handrail. This is typically 4 inches (102 mm).
Informative call indicating aircrew cannot take eyes off an aircraft or a surface position without risk of losing tally/visual. Paint(s) Interrogated group/radar contact that is responding with any of the specified IFF modes and correct codes established for the id criteria. Panther Enemy nuclear powered attack submarine. Parrot IFF transponder ...
Today, flat runged flexible ladders are also called Jacob's ladders. [3] They are used to allow access over the side of ships, and as a result, pilot ladders are often incorrectly referred to as Jacob's ladders. A pilot ladder has specific regulations on step size, spacing and the use of spreaders.
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