Measuring Roof Angles

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

Measuring roof angles.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Finally enter the value of the rafter length and. Pitch of any roof can be computed by the number of inches it grows vertically for every 12 inches it extends horizontally. 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.

Measure out horizontally 12 one foot from the gable end sloping trim to a point along horizontal siding or use your level to make a mark that is level horizontally measured out 12 from the sloped gable trim or roof edge. The calculations for figuring roof angles are based on the width and height of the roof. Then enter the value of the run and choose the unit of measurement from the drop down menu. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

If you know the angle of the roof in degrees you can find the roof pitch by converting the angle in degrees to a slope then finding the rise by multiplying the slope by 12. However carpenters typically make use of diverse finders of roof pitch angles an example of that is being a rafter. This is because the roof section of a building can be likened to a triangle with a base width a height in. 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.

For example a roof that rises 6 inches for every 12 inches of the horizontal run has a 6 in 12 pitch. If you re using a 2 ft 0 61 m level divide the distance between the level and the roof by 2 to get the true pitch. First enter the value of the rise and choose the unit of measurement from the drop down menu. The value displayed as the rise will be your x.

Outside of the u s a degree angle is typically used. If you re using a 1 ft 0 30 m level the pitch is the distance between the edge of the level and the roof s surface. Angle the angle of a roof is the same as the roof s slope except instead of being represented as x 12 it is represented in degrees. First find the slope by finding the tangent of the degrees eg.

Then multiply the slope by 12 to get the rise.