Pitched Roof Area Formula

For example if your roof s pitch is 4 in 12 you would divide 4 by 12.

Pitched roof area formula.

Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. To accurately calculate the area of your roof you must first determine its slope or pitch. They have a pitch ranging from 4 12 to 9 12. A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof.

All formulae are below the calculator. How to calculate the roof area of a building. Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. These roofs have a pitch less than 4 12.

Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. Roof pitch degree table. You can also calculate roof pitch even without using a roof slope calculator. Roof width m x roof slope height m half roof area m take this example of a perfectly square house with 76m floor space a 45 pitched roof and a 2 35m roof height.

So keeping with our roof pitch of 4 this gives us 1 9. High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. If your number is 1 3 squared would yield 1 9. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches.

Image 1 12 to 12 12 roof pitch 7 12 pitch. The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. To get results you need to provide roof base dimensions length and width and roof pitch we assume it is identical for all sides. The roof area for a hip end is the same as for a gable end the intersection is equivalent to a hip slightly conservative so there is usually no need to consider triangles when measuring a roof.

Once you have your roof s pitch divide the number by 12. Roof pitch affects the actual area of the roof. The maths behind this number is that it is the square root of rise run 2 1. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

This would yield 1 3 next square your result. Conventional roofs are the easiest to construct and you can walk on them safely. The roof slope height is 6 98m.