Compared to both the hot-mix case and the most favorable fuel savings case for warm-mix, concrete. remains the least expensive option both for initial road construction and life cycle costs for many. roadways. For an urban two-lane road in 2013, warm-mix asphalt paving costs were estimated at. $852,238 per two-lane mile compared to $878,513 per two-lane mile for a hot-mix asphalt roadway â or a. savings of roughly $26,000. Even with the WMA improvement in asphalt paving process, a concrete road was cheaper â requiring. only $769,269 per two-lane mile, or roughly $83,000 dollars cheaper than the lowest cost asphalt paving. process. By 2020, these savings are expected to grow2.
What is a Centroid? A centroid of a triangle is the point where the three medians of the triangle meet. A median of a triangle is a line segment from one vertex to the mid point on the opposite side of the triangle. The centroid is also called the center of gravity of the triangle. If you have a triangle plate, try to balance the plate on your finger. Once you have found the point where it will balance, that is the centroid of that triangle. The centroid of triangle ABC
And Center of Gravity. The Centroid is the average position of all the points of an object. When we cut a plane shape from a piece of card it balances perfectly on its centroid. The geographic center of the USA was found this way (near Lebanon, Kansas) in 1918. The Center of Gravity is the same as the centroid when the density is the same throughout.