[ Ссылка ] Step by Step Tutorial: This video will explain how to determine the slope on a roof.
Slope is normally described by the ratio of the "rise" divided by the "run" between two points on a line. In construction, we will use the same numbers without dividing them; for example, a 1.13 % slope roofing will be a 3/12 roof. 3" will be the rise, and 12" will be run.
![](https://i.ytimg.com/vi/dQMFqePOb9I/maxresdefault.jpg)