In this article I will try to affordable way to talk about how to independently calculate the required for the installation of cellular shingles, and metal components. This knowledge will help you in case of need to check the results of contractors or suppliers, or self-purchase and installation.
To begin, we need a drawing of the roof top view, and 4 types of fronts. If you are holding is no project at home with appropriate drawings, it will have little to work with a tape measure and pencil (to fathom all the planes of the roof, as well as the lengths of distortions (skates), face and eaves). For example, consider a conventional roof done by a schematic drawing.
And now let us remember geometry. As seen from the roof of the scheme consists of two triangles and two trapezoids. In order to know the area of these rays, we use the following formulas:
The area of a triangle is equal to the product of the height at the base divided by two. In our example, the area of triangular rays will be: 5.3 * 3.21 / 2 = 8.5065 square meters, since these rays 2 pcs. the resulting value is multiplied by two. Hence: 8.5065 * 2 = 17.013 sq. m. - The area of two triangular rays.
The area of a trapezoid is equal to the sum of the base and top divided by two and multiplied by the height. In our example, the area of trapezoid slope will equal: (4.5 8.7) / 2 * 3.61 = 23.826 square meters, since these rays two, then multiply by two the resulting quadrature and obtain 23.826 * 2 = 47.652 m . sqm.
Based on the previous calculations we can see the actual area of the roof, for this sum the values obtained: 17.013 47.652 71.478 square meters =
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