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  #1  
Old 01-21-2008, 07:49 AM
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Default percentages to inches

I need to know how to convert percentages of slope to inches.Can any one show me ? Thanks.Example,0.4% slope.
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Old 01-21-2008, 10:21 PM
janiceruth
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Default Re: percentages to inches

Well would a 100% slope be a 90 degree slope, or is a 90 degree slope 50%....?? Don't you need to convert to degrees, and not inches...like a triangle ?

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I need to know how to convert percentages of slope to inches.Can any one show me ? Thanks.Example,0.4% slope.
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  #3  
Old 01-22-2008, 03:55 AM
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Default Re: percentages to inches

Slope is usually expressed as the rise, or vertical change, over a specified horizontal run, slope = rise/run

If expressed in %, then slope (%) = 100*rise/run. Some people further confound it by using inches of rise per foot of run, then slope(%) = 100 *(rise/12)/run, where rise is in inches and run in feet. In this case, rise(in) = (slope%/100) * 12 in/ft * run(ft)

For your example 0.4%, in a 1 ft run, the rise is
0.4/100 * 12 * 1 = 0.048", or 0.48" in 10'
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Old 06-28-2012, 12:44 PM
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Default Re: percentages to inches

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i need to know how to convert percentages of slope to inches.can any one show me ? Thanks.example,0.4% slope.
convert 0.3% slope in 10 feet to inches
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  #5  
Old 06-28-2012, 02:36 PM
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Default Re: percentages to inches

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Originally Posted by Unregistered View Post
convert 0.3% slope in 10 feet to inches
First do in feet, 0.03 ft in 10 ft, then convert the rise to inches (12 in/ft)
0.03 ft x 12 in/ft = 0.36 in 10 ft.
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