Run And Ise Roof

Multiply your figure for unit rise by your figure for total run to get the total rise.

Run and ise roof.

3 of rise per 12 of run is the same as 1 of rise per 4 of run or 1 4 25. That s the same as a 14 degree slope or a 25 slope. A 7 12 roof normally expressed as a ratio means that for every 12 inches horizontally the run your roof rises 7 inches. Using the example it would be six inches times 13 feet.

The run is the distance from the outside of the wall to the inside of the ridge. The rise is the distance from the top of the roof to the bottom. Here is an online rise and run calculator which helps to calculate pitch slope and angle with the help of rise and run values. The slope is the steepness of your roof and is the ratio between any two points on your roof.

For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4. Why is the roof slope 25. On a 38 degree sloping roof angle t each individual vertical rise of 9 4 y 1 would have a horizontal run x 1 of 12 inches. Calculate the roof rise using the figures for unit rise and total run.

Total roof rise or change in elevation for a 38 degree sloping roof angle t with one giant rise or step of 7 8 feet to the center of the attic y 2 would have total a run x 2 of 10 feet. Rise and run for your porch roof your roof s slope also called pitch is determined by the rise and run. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run.