Answer:
Surface area needed = 1666.67 ft^2
Length and width of square = 40.825 ft
Explanation:
A safety factor of 1.5 means that the concrete should be designed to hold 1.5 times the weight of structure. This means it has to hold a total of :
Weight of structure to be held (including factor of safety) = 2 * 1.25 * 10^6
Weight of structure to be held (including factor of safety) = 2.5 * 10^6 lb
Square foot of soil needed to bear this weight = 2.5 * 10^6 / 1500
Square foot of soil needed to bear this weight = 1666.67 ft^2
Since this is the area of the square, we can find out the length of the sides as follows:
Area = Length of side * Length of side
Length of side = [tex]\sqrt{1666.67}[/tex]
Length of side = 40.825 ft
