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The Blue Foot Foundation3/22/2021
Over time, the construction industry has developed an effective method to estimate a concrete foundation.You can utilize this method to complete an accurate estimate for your own projects.Because your foundation has not yet been poured, you may be working from a rough sketch or plans.
Take the entire perimeter length of the footer and multiply it by the width. For example, if you have 100 feet of footers that are two feet wide, multiply the two to come up with 200 feet. Multiply that number by the footer thickness, which is usually 12 inches (but could be more), i.e., 200 feet times one foot equals 200. Record this number on a writing pad under a label such as footer cubic feet. Convert the footage into inches since your foundation wall thickness will be eight inches thick. Now, multiply 3,600 inches by eight inches--the thickness of a foundation wall--to get 28,800 cubic inches. ![]() Now you will need to convert the cubic feet into cubic yards in order to estimate the number of cubic yards of concrete necessary for the job. Do this by dividing the total feet by 27 (2,600 cubic feet divided by 27 equals 96 cubic yards of concrete to pour the foundation). For example, if the concrete is 100 dollars per yard, multiply 96 times 100 to get 9,600 dollars to pour the concrete.
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