How To You Find The Slope Of A Roof

For example when a roof has a slope of 5 12 the roof is 5 inches high for every 12 inches long.

How to you find the slope of a roof.

The distance from the center of the ridge to the side dc in. Then enter the value of the run and choose the unit of measurement from the drop down menu. Roof pitch is simply the slopecreated by the rafter. For example if you find 4 inches of height with the tape measure at the 12 inch mark on the level your slope is 4 12 or 4 in 12.

Go search your app store for roof pitch apps. There are also a number of smartphone apps that you can use to find the slope of your roof if you have a clear view of a gable end on the building. To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope. You can measure with twelve feet or twelve yards but in this article we will use twelve inches.

Assuming the roof to be a right triangle the slope of the roof will be measured as the ratio between bd and dc. Just write down the measurements you found. The rafters that will provide you with the best measurements are the rafter in the attic the overhang rafter at the end of the roof and the barge rafter which is located to the side of the gable. To do this simply convert the rise and run as a fraction to a decimal form eg.

Another way of stating this is that the roof has a rise of 5 and a run of 12. You don t have to get up on the roof or go to the attic to use these. First enter the value of the rise and choose the unit of measurement from the drop down menu. The slope of your roof is the ratio of vertical distance rise to horizontal distance run.

Roof slopes are measured in units of twelves. Roof pitch is often expressed as a ratio between rise and run in the form of x 12. Finally enter the value of the rafter length and. Here are the steps to follow for the roof angle calculator.

It can be assessed in two ways either as the angle the rafter makes with the horizontal or the proportion between the rise and the run of the roof. Measuring the underside of the roof is actually the most accurate way of calculating the slope of the roof as there are no materials which will create an uneven surface. Rise run rise run slope. First convert the pitch to a slope.