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Round holes
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
Thank you for being with us and sorry for any inconveniences this could caused.
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Round holes
by cgleason » Tue Jun 10, 2008 10:55 pm
I have to pour a sign footing that is 5' diameter (round) and 10' deep. I came up with aprox 7.5 yards.
- cgleason
by Dirtman » Wed Jun 11, 2008 12:47 am
Running the formula for the volume of a cylinder (using feet): pi * radius^2 * height = 3.1415927 * 2.5^2 *10 = 196.35 ft^3.
196.35 ft^3 / 27 ft^3 = 7.27 yd^3. As you should round up with concrete, your approximation of 7.5 cubic yards is correct.
196.35 ft^3 / 27 ft^3 = 7.27 yd^3. As you should round up with concrete, your approximation of 7.5 cubic yards is correct.
- Dirtman
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