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.
Width of a roof.
The total run is the distance from the peak to the edge of the roof which in this case is the total width divided in half which is equal to 10 feet or 120 inches.
We multiply the roof length c which is the sum of building length plus the gable end overhangs of the roof by the roof width of slope a that we just figured out above when we computed the hypotenuse of the roof triangle that s why we needed the roof rise number.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
Roof pitch calculator results explained.
Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.
Since pitch is the rise over a 12 inch run divide the run by 12 to get the multiplier in this case 120 12 10.
The roof area ra is calculated easily.
Angle the angle of a roof is the same as the roof s slope except instead of being.