Measuring Roof Angles

Slope tan degrees.

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. 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. However carpenters typically make use of diverse finders of roof pitch angles an example of that is being a rafter. Finally enter the value of the rafter length and.

Then enter the value of the run and choose the unit of measurement from the drop down menu. Here are the steps to follow for the roof angle calculator. 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. The value displayed as the rise will be your x.

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. A distance of 7 inches 18 cm for example would mean your roof has a pitch of 7 in 12. Pitch tan angle where angle is the roof pitch expressed in degrees. For example a roof that rises 6 inches for every 12 inches of the horizontal run has a 6 in 12 pitch.

For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. 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 enter the value of the rise and choose the unit of measurement from the drop down menu. Then multiply the slope by 12 to get the rise.

First find the slope by finding the tangent of the degrees eg. 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. This is because the roof section of a building can be likened to a triangle with a base width a height in. Outside of the u s a degree angle is typically used.

Pitch of any roof can be computed by the number of inches it grows vertically for every 12 inches it extends horizontally.