Calculation Roof Area Formula

1 of rain on 1 000 sf roof will yield 623 gallons roof area m2 x precipitation amount mm amount collected liters other water conservation calculators.

Calculation roof area formula.

The roof slope height is 6 98m. Divide your roof pitch by 12. Roof slope pitch rise run area calculation methods. For example if your roof s pitch is 4 in 12 you would divide 4 by 12.

To accurately calculate the area of your roof you must first determine its slope or pitch. 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. Roof pitch is given as the number of inches in height change over the distance of one foot. Hip roof area calculator.

Roof area ft2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember. Next square your result. Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the actual area of the roof to be used in the roofing material calculator. Calculate or enter the square footage of the attic or area to be vented.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. L 30 feet h 12 feet 30 12 2 180 square feet. 1 roof square 100 square feet. Hip roof is a roof with a sharp edge or edges from the ridge to the eaves where the two sides meet.

How to calculate the roof area of a building 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. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. 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.

Calculating the area true once you have your roof s pitch divide the number by 12. Dividing by 12 gives the ratio of inches in rise per distance. 1 9 1.