12 12 Roof Pitch Factor

The roof pitch is a measure of roof steepness.

12 12 roof pitch factor.

Valley hip factor. 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. Sometimes pitch is also expressed in fraction form using a fraction with a slash such as 6 12. One medium to describe the roof pitch is in 12 runs.

This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. For example if you measure 4 inches the pitch of your roof is 4 12. Roof pitch 6 12 roof length including overhangs 40 gable wall length including overhangs 24 enter 6 into the calculator slope factor 1 1180 multiply the roof length by the gable wall length 40 24 960 multiply this amount by the slope factor 960 1 1180 1073 28 the area of this roof 1073 3 sq. If this isn t practical then perform the same measurement on the underside of the roof.

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. This numerical figure is significant as not everybody can understand the technical measurements. You can easily find roof pitch factor chart online from where you can take help in calculating pitch factor for your roof. Roof pitch degree table.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. 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. This will give you the rise over run or pitch. 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.

The angle for 6 12 is 26 57 and in grades it is described as 50. 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. 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. 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.

You just have to go online and there you can search this chart you will surely. 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. For example if the pitch of the roof is 6 then it is written as 6 12. This 6 12 roof pitch factor can also be described in other measures.