Concrete-Calculator Ready-mixed concrete is sold by volume measured in cubic yards. If you can determine the area of your concrete project (length x width for rectangular projects) and ... Concrete Calculator Formula - Ready-Mixed Concrete, Pre ... concrete calculator formula: (length x width x depth) divided by 27 =# of cubic yards example: 18 feet long, 18 feet wide, 6 ... How It Works: Concrete - Popular Mechanics Oct 30, 2009· How It Works: Concrete How it's made and how you use it. ... Projects using up to about a cubic yard can be handled with a portable cement mixer that you ...    Read More

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