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.

Hip roof area calculator. A 12 in 12 pitch is a. Roof slope pitch rise run area calculation methods. Calculating area is easy in two dimensions but nearly all roofs slope up to a peak which adds a third dimension.

Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. Calculating the area true if you want to get the exact area measurement for your roof you can follow these steps. For example if your roof s pitch is 4 in 12 you would divide 4 by 12. The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.

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. Roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. If your number is 1 3 squared would yield 1 9. Hip roof is a roof with a sharp edge or edges from the ridge to the eaves where the two sides meet.

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. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Rainwater collection calculation formulas and equations. 3 2 in ft.

Corner 2 in ft. Once you have your roof s pitch divide the number by 12. If you re planning to put a new roof on your house it s important to purchase enough matching shingles to complete the job. To do that you need to accurately calculate the area of your roof.

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

1 of rain on 1 000 sf roof will yield 623 gallons roof area m 2 x precipitation amount mm amount collected liters. This would yield 1 3 next square your result. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.