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There is no percentage, it is worked out on a ratio of 1:40 (meters)

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16y ago

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How do you work out fall on 6inch pipe over 20 maters?

To calculate the fall (slope) on a 6-inch pipe over 20 meters, you first need to determine the desired slope percentage. A common recommendation for drainage pipes is a slope of 1% to 2%. For example, using a 1% slope, the fall would be 0.2 meters (or 20 centimeters) over the 20-meter length. This means you should lower one end of the pipe by 20 centimeters relative to the other end to ensure proper drainage.


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they are still building a drainage system


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Oh, dude, a 1 in 40 fall on a drainage pipe means that for every 40 units of horizontal distance, the pipe will drop by 1 unit vertically. It's like the pipe is playing a little game of "let's go downhill slowly" as it carries all that water away. So yeah, it's just a fancy way of saying the pipe is sloping down to help with the drainage.


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How often should I clean gutter downspouts to prevent clogs and ensure proper drainage?

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