Roof Pitch Factor Chart

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.

Roof pitch factor chart.

Most commonly a roof pitch will be from 0 flat to 12 45. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Roof pitch angle and slope factor chart.

Roof pitch is a term used in the roofing industry to describe the angle slope of a roofing structure. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. The pitch of a roof is determined by 2 numbers. Once you ve figured out the pitch of your roof you can consult the following chart to discover the slope factor and hip valley factor.

The headache of using pythagoras and trigonometry can be spared by making use of these charts. What is a roof pitch chart. Valley hip factor. Roof pitch is a term describing how steep or flat your roof slope is.

In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be. For tile shingle slate and metal roofing. Roof pitch factor chart you can easily find roof pitch factor chart online from where you can take help in calculating pitch factor for your roof. If this isn t practical then perform the same measurement on the underside of the roof.

Find the square root of the result. Image 1 12 to 12 12 roof pitch 7 12 pitch. We included a roof pitch chart below the 7 12 example image and the calculator below that. Roof pitch degree table.

The rise and the length. Roof pitch angle and slope factor charts. Download the slope chart pdf. Roof pitch varies depending on culture climate style and available materials.

In the uk the typical house has a pitch between 40 50 although 45 should be avoided. You just have to go online and there you can search this chart you will surely find the one. The slope of the roof provides the rise and the run to be plugged into the equation. Usually they come in the form of a roof pitch diagram chart but other times it will be presented to you in a conversion format.

The combination of two numbers are used to display or show the roof pitch. A roof pitch of 4 in 12 4 12 has a rise of 4 and a run of 12. The roof pitch factor is also used to calculate the length of common rafters. In the usa the range of standard pitches is anywhere between 4 12 and 9 12.