Slope Factor For Area Of Roof

Enter 6 into the calculator slope factor 1 1180 multiply the roof length by the gable wall length 40 24 960 multiply this amount by the slope factor 960 1 1180 1073 28 the area of this roof 1073 3 sq.

Slope factor for area of roof.

Calculating the roof slope factor is not that difficult. To accurately calculate the area of your roof you must first determine its slope or pitch. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Roof pitch affects the actual area of the roof.

Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Now you re ready to price out the materials. 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. For multi pitched roofs simply add the areas of all common pitches together by toggling layer visibility from the summed layer identified by the.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. A 12 in 12 pitch is a. All you need is a simple trigonometry equation and a calculator that has a square root button. The roof slope factor chart also consists of conversion factors to determine the slope of the roof.

Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. To obtain an accurate roof pitch measurement properly measure the rise and run. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof for roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1.

Then you ll be able to measure slope from an unfinished attic space under the roof. If you need to find out the area of the roof such as to purchase roofing knowing and using the factor will assist you greatly in determining the exact square footage. Take your area result and multiply it by the pitch multiplier or slope correction factor found in the table above to arrive at the roof s surface area. Feet the area of a hip roof equals the area of a gable roof with the same dimensions.

The maths behind this number is that it is the square root of rise run 2 1. Once you know the roof slope multiplier for a particular slope you can use it to find the actual area of any size sloped roof with the same slope. Divide the rise by the run the run is 12.