12 12 Roof Pitch Factor

Pitch is thus the ratio of the rise in inches to a 12 inch run and is often expressed using a semicolon for example 6 12.

12 12 roof pitch factor.

The roof pitch is a measure of roof steepness. Valley hip factor. For example if you measure 4 inches the pitch of your roof is 4 12. The pitch is defined as the slope of the roof and is commonly represented as the ratio of the rise over the run in the form x 12.

Roof pitch degree table. We included a roof pitch chart below the 7 12 example image and the calculator below that. The angle for 6 12 is 26 57 and in grades it is described as 50. This numerical figure is significant as not everybody can understand the technical measurements.

Sometimes pitch is also expressed in fraction form using a fraction with a slash such as 6 12. This will give you the rise over run or pitch. A roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. Image 1 12 to 12 12 roof pitch 7 12 pitch.

On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1. Slope factor chart pitch of roof slope factor 3 12 1 0308 1 4362 4 12 1 0541 1 4530 5 12 1 0833 1 4743 6 12 1 1180 1 5000 7 12 1 1577 1 5298 8 12. This 6 12 roof pitch factor can also be described in other measures.

The rise is the height of the roof at its highest point and the run is the horizontal span of the roof measured from the roof ridge to the side of the building. You can easily find roof pitch factor chart online from where you can take help in calculating pitch factor for your roof. One medium to describe the roof pitch is in 12 runs. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

For example if the pitch of the roof is 6 then it is written as 6 12. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. If this isn t practical then perform the same measurement on the underside of the roof.