Roof Area Formula

Here we explain and include examples of simple calculations and also examples of using the tangent function to tell us the roof slope or angle the rise and run of a roof the distance under the ridge to the attic floor and how wide we can build an attic room and still have decent head room.

Roof area formula.

A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. 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. Depending whether the roof area is measured horizontally. 1 of rain on 1 000 sf roof will yield 623 gallons roof area m 2 x precipitation amount mm amount collected liters.

Corner 2 in ft. The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials. 3 2 in ft. Here is the online hip roof area calculator which helps you calculate the hip roof parameters such as roof rise common and hip rafters length and roof area based on width height of roof base and the roof pitch identical for all sides.

This calculation is important because it can greatly affect your estimates the air circulation in a room and more the custom columns in revu s markups tab supports formulas and math constants functions and operators. To do that you need to accurately calculate the area of your roof. This would yield 1 3 next square your result. Corner if the parapet is continuous around the entire building is 3 ft 0 9 m high above the roof surface and has been designed for the wind loads per fm global property loss prevention data sheet 1 28.

Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. If you re planning to put a new roof on your house it s important to purchase enough matching shingles to complete the job. If your number is 1 3 squared would yield 1 9. Rainwater collection calculation formulas and equations.

Once you have your roof s pitch divide the number by 12. To accurately calculate the area of your roof you must first determine its slope or pitch. Hip roof area calculator. A number of users have asked if revu s built in measurement tools are able to calculate the area of a roof from a plan view.

Calculating area is easy in two dimensions but nearly all roofs slope up to a peak which adds a third dimension. Roof slope pitch rise run area calculation methods. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Roof pitch affects the actual area of the roof.

Roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. A 12 in 12 pitch is a. For example if your roof s pitch is 4 in 12 you would divide 4 by 12.