1 4 Per Foot Roof Slope

18 4o inches per foot.

1 4 per foot roof slope.

And pitch is a fraction derived by dividing the rise by the entire span. A 12 12 roof pitch would be selected as 12 inches of rise per foot with no fraction and the value generated by the calculator would be 45º. When looking at metal roofing panel you will need to consult with the manufacturer to ensure that the metal panel you selected will work for your application. In commercial low slope roofing applications the roof has a slope of less than 3 inches per foot.

If the pitch is 1 3 the slope is 8 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. 3 12 1 2 12 and 1 4 12. Steep slope means that the roof has a slope of more than 3 inches per foot.

The most common slopes are. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. Generally these roofs have a pitch from 1 2 12 to 2 12 from 4 2 to 16 7. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

An example for a steep sloped roof is 8 12. 8 27 2014 9 49 23 am. 4 3 1 slope. This means that the rise of the slope goes up or down 8 inches for every 12 inches.

This means that for every horizontal foot the roof level goes up less than 3 inches vertically. Strangely enough if a pitch of 6 inches rise per foot is entered then the degrees generated is not 22 5º it is 26 6º. Low slope or steep slope commercial application. Most roof s have a pitch in the 4 12 to 9 12 range.

If the slope is 4 12 the pitch for the 24 foot span is 1 6. For example a pitch 1 12 means that per every twelve yards of building length the rise will be equal to one yard. To put it in perspective the angle of this slope would be around 30 degrees. Remember slope is expressed as a ratio and in inches per foot.

A low slope roof is one whose slope is less than 3 12. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. Slope minimums for various roof coverings. We can divide roofs into the following categories.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. Roofs on most commercial buildings have at least a small slope of 1 4 inch.