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To safely reach a 10.5-foot high ceiling, you should consider using a ladder that is at least 12 feet tall. This accounts for both the height of the ceiling and the necessary extension or reach required to work comfortably and safely. A step ladder of this height will also provide stability and support while you work. Always ensure to follow safety guidelines when using ladders.
The proper distance of a ladder from a wall can be determined using the 4-to-1 rule: for every four feet of height you want to reach, the base of the ladder should be one foot away from the wall. This means if the top of the ladder is 12 feet high, it should be placed 3 feet away from the wall. This positioning helps ensure stability and safety while using the ladder. Always make sure the ladder is on a firm, level surface and positioned securely.
Using Pythagoras' theorem the length of the ladder is 20.248 feet
Regard the ladder as the hypotenuse and the distance from the wall as one leg of a right angled triangle. Then, 262 = 102 + H2 : where H is the height reached up the wall by the ladder. H2 = 676 - 100 = 576 : H = √576 = 24
he should bud the ladder so it wouldn't be able to reach
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9.2
30 feet. And you don't have to round it to the nearest foot. It's exactly 30 feet.
10.9 [11]
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It depends if you want the ladder to overhang or to be set under but I would say 2 feet or 2/3 of a meter
To safely install a ladder on stairs to reach high places, you can use a ladder stabilizer or standoff to ensure stability. Make sure the ladder is the right height and angle for the stairs, and always have someone hold the ladder while you climb. Additionally, use non-slip feet and secure the ladder at the top to prevent it from slipping.
Hypotenuse = 20/sin580 = 23.58356807 Length of ladder: rounded to 23.584 feet
Assuming it is a two section ladder then it must therefore have a minimum length of 28 feet.
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