Pitched Roof Area Formula

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.

Pitched roof area formula.

Image 1 12 to 12 12 roof pitch 7 12 pitch. These roofs have a pitch less than 4 12. 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.

Once you have your roof s pitch divide the number by 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. If your number is 1 3 squared would yield 1 9.

How to calculate the roof area of a building. The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. Conventional roofs are the easiest to construct and you can walk on them safely. So keeping with our roof pitch of 4 this gives us 1 9.

Add 1 then take the square root. To accurately calculate the area of your roof you must first determine its slope or pitch. Roof pitch affects the actual area of the roof. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. One of users asked us to create calculator which will help him estimate hip roof parameters like rafter s lengths roof rise and roof area. 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.

Adding 1 gives us 1 1 9 10 9 then taking the square root gives us about 1 0541. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. The roof slope height is 6 98m. This would yield 1 3 next square your result.

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. They have a pitch ranging from 4 12 to 9 12. The maths behind this number is that it is the square root of rise run 2 1.