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The area of artificial leveling site is calculated by adding 2m to each side of the outer wall sideline The area of artificial leveling site is calculated by adding 2m to each side of the outer wall sideline. How can the formula s = s bottom + 2 × l outside + 16 be calculated? There is also excavation and sloping foundation pit How can the formula v = (a + 2C + KH) * (B + 2C + KH) * H + 1 / 3K * k * h * h * H be calculated A: Length of foundation cushion B: Width of foundation cushion C: Working face width K: Grading factor H: Earth excavation depth
On site leveling s = s bottom + 2 * l outside + 16
The reasoning is to assume that the original site is a long and B wide. According to the requirements, the whole site area is calculated by adding 2m to each side of the outer wall sideline
(a + 4) * (B + 4) = AB + 2 [2 (a + b)] + 16 = s bottom + 2 * l outside + 16
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