A 45-degree angle corresponds to which slope ratio?

A 45-degree angle corresponds to a slope ratio of 12:12, which is equivalent to a rise of 12 units for every 12 units of run. This is a perfect representation of a right triangle where both the opposite and adjacent sides are equal, resulting in a 45-degree angle.

When dealing with slope ratios, the ratio indicates how much vertical rise occurs for a horizontal run. In the case of a 45-degree angle, the rise and run are equal, leading to this specific ratio of 1:1. When expressed as a ratio with the same units, it becomes 12:12.

This alignment with a 45-degree angle is significant for roofing and construction because it directly influences water drainage and structural stability. A slope of 12:12 means that for every foot horizontally, the elevation changes by one foot, creating a steep but manageable incline that can effectively shed water.

In construction, it's important to recognize how slope ratios relate to roofing materials, design, and overall building safety. Understanding and visualizing this slope can also determine the type of roofing materials suitable for such angles, which commonly include those designed for higher slopes that can withstand water runoff efficiently.