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Q: What is the minimum length ladder that a worker needs to access a landing nine feet above the adjacent floor?
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The top of a ladder must extend how many feet above the surface a worker is climbing onto?

From the US OSHA Construction standards:1926.1053(b)(1)When portable ladders are used for access to an upper landing surface, the ladder side rails shall extend at least 3 feet (.9 m) above the upper landing surface to which the ladder is used to gain access; or, when such an extension is not possible because of the ladder's length, then the ladder shall be secured at its top to a rigid support that will not deflect, and a grasping device, such as a grabrail, shall be provided to assist employees in mounting and dismounting the ladder. In no case shall the extension be such that ladder deflection under a load would, by itself, cause the ladder to slip off its support.


What is the minimum size for an attic access?

Approx. 21". If there is space for it, consider the size of a drop down ladder unit, which is more useful than an opening that requires a ladder.


A ladder leans against a wall making an angle of 73 degress with the ground The ladder's base is 1.17m away from the wall Determine the length of the ladder?

Providing that the ground is level and that the wall is straight, you have the outline of a right angled triangle with an adjacent angle of 73 degrees and an adjacent length of 1.17 metres. In order to find the length of the hypotenuse (which is the ladder itself) we use the cosine ratio: cosine = adjacent/hypotenuse Which when rearranged is: hypotenuse = adjacent/cosine hypotenuse = 1.17/cosine73 degrees = 4.001755235 So the length of the ladder is 4 metres correct to one significant figure.


What is an accommodation ladder?

An accommodation ladder is a flight of stairs or a ladder for lowering over the side of a ship for access to and from a small boat.


Which one of the following means of level access requires a load capacity of 5 times expected load with a minimum of 1000 pounds?

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When using an articulated ladder how should you access a roof?

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What is the minimum length of a ladder required to access a roof surface 12 feet off the ground?

You should normally have three rungs(steps) past the surface you are climbing to from the ladder. They are a foot apart on most ladders so 15 feet would be close. Add a foot since you have to angle the ladder appropriately(scope) so 16 feet or longer is safe. A 20 foot extension ladder would be a good choice.


Do you need fall protection when climbing a caged ladder?

If the cage extendes for more than a specified distance without a landing, then you will need to use fall protection when climbing a caged ladder.


How do you be a full access member on study ladder?

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How do you reach access to the roof on golden compass for the DS?

In the DS game "The Golden Compass," you can access the roof by locating and using the ladder located in the courtyard of Bolvangar. Look for a ladder icon on the touchscreen to interact with it and climb to the roof.


Installing an Attic Ladder in Your Garage ?

If you are tired of crawling through the small space in your closet to access your attic, you should consider installing an attic ladder. An attic ladder can be installed in your garage or breezeway and will give you better access to your attic than a small crawl space. Most attic ladders come completely assembled, so installing an attic ladder is easy and only takes a few hours. It is much safer to use an attic ladder too, as it offers more stability than a traditional ladder or step stool.


If A ladder leaning against a wall makes a 60 angle with the ground the base of the ladder is 3 m from the building how high above the ground is the top of the ladder?

This answer uses trigonometry to avoid a lot of work:tangent = opposite/adjacent and tangent*adjacent (base of ladder from the building) = opposite (height of ladder above ground)So: tangent 60 degrees*3 = 5.196152423Therefore: Top of the ladder above ground = 5.2 meters correct to one decimal place.More laborious methodThe right triangle formed by the wall, ground and ladder has sides in the ratio of 1::2::sq-rt-of-3. The shortest side is the one opposite the 30 degree angle, i.e., the given distance from wall to base of the ladder--3 m.The length of the ladder represents the hypotenuse of the triangle, and is twice as long, hence 6 m.And the height of the ladder's top from the ground is proportional to the third side whose length is sq-rt-3 times that of the shortest side. Sq-rt-3 is about 1.732, so height of the ladder's top at the wall is about 5.20 m, or 520 cm.