How To Find The Slope Of A Roof In Degrees

There are a number of ways that you can calculate the roof slope of your home and you need to be aware of this.

How to find the slope of a roof in degrees.

For example if the roof slope is 45 then sec 45 1 414213. Sometimes slope is referred to as pitch angle rise incline or grade. Degrees tan 1 43 calculated out this gives an angle of 23 27 degrees. Write the roof slope as the ratio of rise over run or vertical distance over horizontal distance.

How to convert roof pitch to degrees. Calculate the roof slope. Roof pitch on the form x 12 can be expressed in grades as. Example slope as grade.

First convert the pitch to a slope. The roof s pitch is the vertical rise and it is divided into its horizontal run or span known as slope in stair construction and the tangent function in geometry or trigonometry. For example in construction you may refer to the pitch of a roof or the grade of a slab. The most precise way to find the roof s slope is by measuring it from the underside.

Many different professions use slope in describing an angle. Either way let s see how you can calculate the slope of a roof without using a roof slope calculator. Slope as grade for an elevation of 1 m over a distance of 2 m can be calculated as. S grade 1 m 2 m 50 slope and roof pitch.

This is usually expressed with the rise and followed by the run in the imperial measurement system dominated by number 12 which in turn gives a ratio of the total measurement of the incline for every 1 foot or 12. Roof pitch is the slope created by the rafter. You can find the roof pitch in the form of x 12 like 4 12 or 9 12. Measuring the slope from the rafters.

That s your roof slope multiplier. If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length. Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree. For example if your tape measure found a 6 inch vertical distance to the 12 inch mark on your level the slope is 6 12 or 6 in 12.

To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope. Rise run rise run slope. The value displayed as the rise will be your x. If you re using the table below you should consider getting yourself a construction calculator.

If you know the roof slope in degrees simply find the secant using a scientific calculator. Pitch tan angle where angle is the roof pitch expressed in degrees. To do this simply convert the rise and run as a fraction to a decimal form eg. Both are referring to angles.