WebJan 28, 2024 · Roof span: 240 inches Ridge board thickness: 12 inches Roof slope: 26.57º Rater overhang: 1.5 inches We can now send these numbers through a calculator following the rafter length calculator formula: To see our rafter size in feet, we need to divide our inches figure by 12. Our rafters should measure 12’ 2.75” long. WebRainwater Collection Calculation Formulas and Equations. Roof Area (ft2) X Precipitation Amount (in) X 0.623 = Amount Collected (gallons) Easy Formula to Remember: 1″ of Rain …

Roof Area Calculator with A Price Estimator - CONSTRUCTION …

WebMultiply the area to be covered by the roof by the roof slope factor to find the total surface area of the roof. Let’s assume that the area is 600 square feet: $$\text {Surface area of roof = area covered by roof × roof pitch multiplier = 600 × 1.08 = 648 square feet}$$ ( 44 votes, average: 3.41 out of 5) WebFeb 2, 2024 · To get the area of the roof with the slope included calculated, one more element needs to be added to the formula: roof area = (roof length × roof width) × roof … crackmax

How the slope of your roof determines your roofing …

WebJun 8, 2010 · Which is the same as saying a 45 degree slope = a 12 in 12 slope, or the roof will rise 12" for every 12" of horizontal run. We used this detail to calibrate our folding carpenter's rule scale for reading roof slope … WebJun 8, 2010 · I just took the given roof slope of 38 degrees and used my calculator (or a table, or actual geometry) to look up the value of Tan < A. Tan 38o = 0.7813 Now using the formula above 0.7813 = Rise (Y1) / Run … WebTo estimate your roof slope, go into your attic. Use a 2-foot level. Place it against a rafter, horizontally. Then measure the distance up to the rafter from the other end of the level. Since you are using a 2’ level, divide the … crack matlab 2021a