How To Work Out The Angle Of A Roof

Here are the steps to follow for the roof angle calculator.

How to work out the angle of a roof.

Calculate the roof pitch as the proportion of rise and run. First enter the value of the rise and choose the unit of measurement from the drop down menu. Rise run rise run slope. Angle arctan pitch arctan 0 25 14.

Then enter the value of the run and choose the unit of measurement from the drop down menu. Pitch rise run 1 5 6 25. See also how to draw an oval for 2 methods to mark out an oval including very large ovals. Determine the distance from the edge of the roof to a point on the same plane directly under the highest point.

The angle of your roof is calculated the same way you d work the angle of a right angled triangle. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. For many people working out the roof pitch angles can be a bit of a nightmare especially if you are going to do it yourself and try to manage it all on your own. This is useful because sometime you may need to cut a bevel with your circular saw that is not calibrated using roof pitch style this setting on circular saws is calibrated in degrees.

Therefore calculating the two base angles provides the peak angle by subtracting the total from 180. How to figure roof angles. Determine the vertical height between the base of the roof and the highest point. First convert the pitch to a slope.

The truss s top angle derives from 180 degrees minus the two base angles. So use the 12 inch level as a constant run and 18 inch ruler as a variable rise. Naturally this does not go down particularly well without the right tools knowledge and assistance. Calculating roof angles always comes from the width and height of the roof.

Record this as the roof width. Find all the needed factors in order to determine the pitch angle s degree. Recalculate this value into an angle. The sum of angles within a triangle always equals 180 degrees.

The 12 inch run is considered standard in roof pitch or angle terminologies. This can be read from the architect s. For a vertical plumb pipe through a pitched roof the corresponding roof pitch or enter set base measurement and use dimensions from the diagram at right to set pipe at correct angle through roof or sheeting. Finally you can find the roof pitch in the form of x 12.

If you prefer to work the angle out the traditional way without our handy calculator you can use the following equations to find the length of the rafter and the slope. Locate its tangent or tan and follow the left row for you to read its corresponding degree. To do this simply convert the rise and run as a fraction to a decimal form eg. Rafter height width from pythagoras remember that at school so.