How much QuickCrete ? (2025 Update) FAQ

James Nipper · 2004-03-04T02:59:35+00:00

This is a very green question. But, I suppose if we already had all of theanswers, there would be no need for the group, huh ?I am planting a large signpost, made out of 6 X 6 pt wood. I plan todig a hole 30 inches deep, and 30 inches square. Of course, themiddle of the hole will be filled with the 6 inch square post, leaving 12inches on all sides.I guess the area to be actually filled with concrete then is about 30 inchesdeep, and 24 inches square, not counting the post.This area seems about 10 square feet (right?) , which I believe is justover 1/3 of a yard of concrete (which would be 27 sq ft I think).I want to use 40 lb bags of QuickCrete. Can anyone estimate how manybags I will need ?--James--Thanks for any comments and help on this !!