32
115
It should be placed 2 ft from the wall
For a working height of 12 feet, the ladder should be placed at a base distance of approximately 3 feet away from the wall for every 4 feet of ladder height. This means the base of the ladder should be about 9 feet from the wall. Additionally, ensure that the ladder is on stable ground and that the top is securely positioned against the surface to prevent slipping. Always follow the manufacturer's guidelines for specific ladder types.
That's going to depend heavily on two things:-- Do you want to be able to stand the ladder up and lean it against the wall ?-- How high above the ground do you want the ladder to hit the wall ?You haven't really said anything about these specifications in your question.If you want the ladder to lean against the wall, and hit it exactly at the top that is24-ft high, then the length of the ladder must besqrt( [6]2 + [24]2 ) = sqrt( 36 + 576 ) = sqrt(612) = 24.739 ft (rounded)
I've heard it said that the vertical should be 4 times the size of the base (of the right angle triangle). Therefore if a 12 foot ladder would reach about an 11 foot vertical, it would be placed just under 3 feet from the wall.I've also seen it said that the angle should be 75.5 degrees.Personally I do not agree with an absolute. At heights under 10 feet, your center of gravity (especially if you are a very large person) might cause the ladder to move away from the wall while you are climbing, therefore a more shallow angle may be appropriate.At heights over 20 feet, I like to ensure good pressure against the wall when I am at the top. This feels more secure on a windy day. A more shallow angle can help, but ONLY if the base of the ladder is braced. For instance I've braced the bottom against a big tree, or a long plank that spans between the two wheels of a car.At heights over 25 feet especially you've just got to rule out all variables because it only takes one fall in a thousand trips up a ladder to end your fun (income, health, life). Stand back and look at your angles, test how the ladder feels as you go up, adjust as many times as you have to, brace the bottom, tie off the top, never compromise.
56
13 feet
115
It can be any angle that is more than zero degrees and less than 90 degrees. <><><> It will be an ACUTE angle, and if the ladder is placed properly (1 ft out for each 4 ft up) the angle between wall and ladder will be ABOUT 18 degrees.
10,000 m
3 ft
15 meters, or less, depending on the angle.
3 FEET
20
It should be placed 2 ft from the wall
1/4 the height of the ladder. (flat top on rungs should be level when ladder is placed right.
Answer your self dont know