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What is the minimum length of a ladder required to access a roof surface 12 feet off the ground?
Wiki User
∙ 12y ago
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.
Wiki User
∙ 12y ago
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What is the area of a cricket ground in acres?
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Flat surface that extends indefinitely in all directions?
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What is the minimum area required for golf ground?
420 yards long.
What food should be cooked at a minimum 165?
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How many feet deep in the ground the freezing will go?
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Is a river surface or ground water?
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When does ground water become surface water?
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How do you get access Engine ground Strap?
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Why are pylons on which electricity cables are hung very tall?
To ensure that the minimum height of their conductors maintain the legally-required clearance above ground. The greater the operating voltage, the greater this clearance must be.
Why are the pylons on which electricity cables are hung very tall?
To ensure that the minimum height of their conductors maintain the legally-required clearance above ground. The greater the operating voltage, the greater this clearance must be.
Is a metal surface being ground a chemical change?
A metal Surface being ground is a physical change, not a chemical change.
