0
A 12-foot extension ladder is placed against a wall To achieve the proper climbing angle approximately how far should the bottom of the ladder be from the base of the wall?
Wiki User
∙ 14y ago
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.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How much sand in 1 cubic meter with specific gravity 2.5?
2.5*1000 kilograms = 2500 kg approximately. The answer is approximate because the density of pure water at 1 atmosphere and 4 deg C is 0.999972 grams/cc, not 1. This is the value against which specific gravity is calculated.
What are some organizations against littering?
Some organizations against littering are people against litter and citizens against litter. There are other organizations such as anti-litter organizations, keep America beautiful, and litter heroes.
What does evelin mean?
Life giving "Hebrew"Very much the individual you have enormous energy and vision and must find a suitable use for your talents. You have great potential for success in business if you can guard against indecision and worry. Your generous nature means that you are never short of friends and with cooperation your relationships can be very rewarding. Perseverance and firm decision making will ensure you achieve your objectives.
In the Bible where do you find 'if you are not for me you must be against me'?
I believe you are asking about the following scripture....If God is for us for us, who can be against us? Romans 8:31Hope this helps There was another time in the Bible when the disciples saw someone casting out demons in Jesus' Name and rebuked them. Can't find it right now but know it is there. Jesus told them, "Don't rebuke them, for whoever is not against me is for me." "He that is not with me is against me" (Luke 11, 23). "He that is not against us is for us" (Luke 9, 50). Matthew 12:30 He that is not with me is against me; and he that gathereth not with me scattereth abroad. ;; Mark 9:40 For he that is not against us is on our part.
What does to work against the clock mean?
Hello, to work against the clock means that you have a limited amount of time to do something in.
When A 12 foot extension ladder is placed against a wall To achieve the proper climbing angle approximately how far should the bottom of the ladder be from the base of the wall?
3 FEET
When A 12-foot extension ladder is placed against a wall To achieve the proper climbing angle approximately how far should the bottom of the ladder be from the base of the wall?
You may set the correct distance by trying different angles so that you feel confortable when climbing the ladder. Approximately between 80 to 130 cm. But it is the correct angle that can tell you the adequate distance from the wall. Only by climbing a ladder you know it. I advise you to put a piece of rubber under the ladder so that it can't slip.
Who has more potential energy someone climbing a ladder on the Moon or on the Earth?
On the earth, because the force he is climbing against is higher, therefore he is doing more work in climbing, and accumulating more potential energy.
What a cause a boy climbing a hill to be so tired?
Gravity. When you're climbing up a hill, you're pretty much competing against gravity.
The use of violence by groups against civilians to achieve a political goal?
Terrorism is the use of violence by groups against to achieve a political goal.
Why is not advisable to place a climbing vine against a concrete wall?
because the vine can cause the breaking of the wall.
When did they stop climbing Uluru?
Uluru can still be climbed. However, it is not usually permitted to climb the Rock in mid-Summer, and tourists unused to the Australian consitions are cautioned strongly against climbing Uluru.
Why were castle walls high?
For strength and security against invaders. Also to be strong against some harsh Irish weather.
How far should a 12-foot extension ladder should be placed against a wall?
3 ft
Cosign lease extension?
If I cosign an apartment lease for a friend can I file bankruptcy against the landlord to get out of the lease.
What did Britain hope achieve by a blockade of American ports?
they hoped to achieve and gain the power of an alliance AGAINST the french
What did Britain hope to achieve by blockade of American ports?
they hoped to achieve and gain the power of an alliance AGAINST the french
