My Math Forum Complex volume calculation.

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 June 7th, 2018, 03:05 PM #2 Global Moderator   Joined: Dec 2006 Posts: 19,294 Thanks: 1686 Is the current surface of the concrete curved? Do you want the final concrete surface to have a gentle slope? If so, how will you achieve that slope, and will the lowest part of it be a point or an edge of the pad?
 June 7th, 2018, 05:11 PM #3 Newbie   Joined: Jun 2018 From: Oregon Posts: 2 Thanks: 1 The current surface is probably curved. It was neither level nor true For the purpose of my question, I would just assume every to be true between points of reference; such that a straight line can connect any two points across the shorter dimension. The minutia of measuring the relative height of every relevant point is prohibitively intensive. The way I posed the question assumes that one can project a straight line from the highest point, to each corner, and that the surfaces between these lines can just be assumed to be relatively flat. This is seriously the most messed up new concrete have ever seen; being only ten feet from the edge along the existing structure to the outer edge, with a difference of over six inches in height--though this six inch difference is over a diagonal of about 16 feet from SW corner to an area along the north edge about 5 feet from NE corner. I just overestimated for practical purposes using a wedge volume calculation. So it's not like this is actually useful somehow. Even If I knew the correct approach to calculate this, a quick approximation and some overage is the the only practical solution in the field. I came to the forum simply out of curiosity over what kind of math would be used to accurately calculate the volume needed to bring the rest of the surface up to a perfectly level rectangular plane. Figured it is probably much healthier to examine the curious nature of this surface, than to start throwing tools, pulling out my hair and walk away from the job cursing.
 June 7th, 2018, 11:44 PM #4 Global Moderator   Joined: Dec 2006 Posts: 19,294 Thanks: 1686 That answers my first question. Can you answer the remaining questions?

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