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  2. Roof pitch - Wikipedia

    en.wikipedia.org/wiki/Roof_pitch

    The pitch of a roof is its vertical 'rise' over its horizontal 'run’ (i.e. its span), also known as its 'slope'. In the imperial measurement systems, "pitch" is usually expressed with the rise first and run second (in the US, run is held to number 12; [1] e.g., 3:12, 4:12, 5:12). In metric systems either the angle in degrees or rise per unit ...

  3. Grade (slope) - Wikipedia

    en.wikipedia.org/wiki/Grade_(slope)

    But in practice the usual way to calculate slope is to measure the distance along the slope and the vertical rise, and calculate the horizontal run from that, in order to calculate the grade (100% × rise/run) or standard slope (rise/run). When the angle of inclination is small, using the slope length rather than the horizontal displacement (i ...

  4. List of roof shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_roof_shapes

    Pavilion roof : A low-pitched roof hipped equally on all sides and centered over a square or regular polygonal floor plan. [10] The sloping sides rise to a peak. For steep tower roof variants use Pyramid roof. Pyramid roof: A steep hip roof on a square building.

  5. Slope - Wikipedia

    en.wikipedia.org/wiki/Slope

    Slope illustrated for y = (3/2)x − 1.Click on to enlarge Slope of a line in coordinates system, from f(x) = −12x + 2 to f(x) = 12x + 2. The slope of a line in the plane containing the x and y axes is generally represented by the letter m, [5] and is defined as the change in the y coordinate divided by the corresponding change in the x coordinate, between two distinct points on the line.

  6. Reflective surfaces (climate engineering) - Wikipedia

    en.wikipedia.org/wiki/Reflective_surfaces...

    Findings of a study conducted by Syed Ahmad Farhan et al. from Universiti Teknologi PETRONAS and Universiti Teknologi MARA in 2021, [2] which is based on the hot and humid climate of Malaysia, suggest that the selection of white roof tiles significantly reduces the peaks of heat conduction transfer and roof-top surface temperature as well as ...

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