Roof Area Pitch Factor

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Roof area pitch factor.

This is done by measuring the width of the roof on the gable side and the exterior wall sections from corner to corner. 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. Now you re ready to price out the materials. Surface area of roof area covered by roof roof pitch factor 800 1 12 896 square feet.

How roof pitch is calculated to accurately calculate the area of your roof you must first determine its slope or pitch. For example a standard roof pitch is. Enter your numbers into this go to roof pitch calculator. Get your roof size by using this roof pitch calculator.

Roof is 6 12 pitch and measures at 2 400 square feet so 2400 x 1 12 2 688 2 88 sqs added for pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. If the area is 10 000 squares then roof pitch would be 12 500 10 000x1 25. Slope of the roof.

Both metric and imperial measurement systems are displayed in a popup menu over the results area. The overhanging portions on the roof are duly added into the figure. 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. Roof pitch is given as the number of inches in height change over the distance of one foot.

Valley hip factor. In other words the surface area is impacted by the slope of the roof. 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. The surface area of the roof is found by multiplying the number found in step 3 by the number found in step 1.

Dividing by 12 gives the ratio of inches in rise per distance. The maths behind this number is that it is the square root of rise run 2 1. The roof pitch can also be determined by staying on the ground.