feet or meters). Horizontal to Vertical Slope Ratio ( __ to 1) 1/4. Slope Ratio: 3:1 or 3 to 1 Percent Slope: 33% Degree Slope: 18.4o Inches per Foot: 4 3 1 Slope. The Gradient Calculator may be another online program that may interest you. 1/2. Caution: The ratio is determined to be "1 in n" which is different to the mathematical "1:n". Fraction Precision Set 1/8 1/16 1/32 1/64 Decimal Inch Metric so on and so on Slope Ratio: 3:1 or 3 to 1 Percent Slope: 33% Degree Slope: 18.4o Inches per Foot: 4. 0.25 400. Calculating the Slope Percentage. 1 Slope. First, solve for the slope in decimal terms, bearing in mind that percent is just 100 times the original number: Percent slope = 100(rise/run); −2 = 100(rise/run); (rise/run) = −2/100 = −0.02. For instance, if you travel 3 inches vertically and 3 feet (36 inches) horizontally, the slope would be 3:36 or 1:12. so for 1 foot it would be just less than 1/4 inch. Select and Re-Calculate to display. 1-1/4 1-1/2 1-3/4 1.25 80. 1.75 57. 5 20 4 25. 2.00 50. In your example the rise is .25 inch over a run of 12 inches so the slope is .25/12 = 0.02083333 Written as a percent this is 2.1 %. The percentage grade is the slope, written as a percent. The stake at the bottom of the slope is called the toe. Tie a string at a fixed height on the hinge. To calculate the slope you divide the rise by the run. 0.75 133. When the slope is decreasing, height and slope have a minus as prefix. Enter the values for the roof pitch in inches per foot rise. 1.00 100. There are 4 different ways of that are used to specify the slope. For every 50 inches the slope changes 1 inch. Author: Steve Last modified by: Steve Created Date: 4/9/2008 5:56:57 PM Other titles: Slope … At a length of 200 feet, a height of 30 feet and a total distance of 202.24 feet is covered. 3/4. To find the percentage multiply this decimal by 100, like this: 100 × .3125 = 31.25%. Convert the rise and run to the same units and then divide the rise by the run. Adding 15 percent to a number is the same as multiplying the number by 1.15. This is read as a "one in twelve slope." Then select a fraction if there is any. Select output Fraction Precision, Decimal Inch or Metric mm. 3 33. The stake at the top of the slope is called the hinge. 0.50 200. two foot just less than 1/2 inch. Since one foot is 12 inches a four percent slope is .04X12 = 0.48 inch drop How much is 15 percent added to five inches? The angle of incline can also be expressed in other units of angle measurement, such as radians or grads. Pound grade stakes into the ground on each end of the area you need sloped. Total Distance, Length and Height Slope percentage is calculated in much the same way as the gradient. Determine the desired grade—typically 1-2% (1/8" per foot to 1/4" per foot) is enough to provide enough runoff. 1% grade = 0.57 degrees = 1 cm per 100 cm = 1 inch per 100 inches = 0.125 inch per foot Vertical Rise, Horizontal Run and Slope Length Horizontal to slope areas - inches/feet 1.50 67. Use our angle unit conversion calculators to convert your slope from degrees to another unit of measurement. The distances in length and height and the total have the same unit (e.g. For example: A 12/12 roof pitch would be selected as 12 inches of rise per foot with no fraction and the value generated by the calculator would be 45º. Example: What is the vertical drop of a 2 percent slope in feet over a horizontal distance of 150 feet? 3 foot just less than 3/4 of an inch. Example: a road with 15% slope has an angle of 8.53°. They are: the angle of inclination, percentage, per mille and it can also be expressed as a ratio. 2-1/2 2.25 44. 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