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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)

   d = run Δh = rise l = slope length α = angle of inclination. The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal. It is a special case of the slope, where zero indicates ...

4. Calculator Here We GO! - Wikipedia

   en.wikipedia.org/wiki/Calculator_Here_We_GO!

   In 1985, CI launched a calculator for the construction industry called the Construction Master [49] which came preprogrammed with common construction calculations (such as angles, stairs, roofing math, pitch, rise, run, and feet-inch fraction conversions). This would be the first in a line of construction related calculators.

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. How Cities Are Using Nature-Based Solutions to Tackle Floods

   www.aol.com/news/cities-using-nature-based...

   Nature-based solutions can create more sponge-like conditions to help absorb run-off. ... The park also counts on the biggest green roof in Thailand, three underground rainwater tanks, and a ...

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!