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50 -lb Fast setting Concrete mix

QUIKRETE 50 -lb Fast setting Concrete mix

4.7
3207

How many bags of fast setting quikrete for 6x6 post 3' in ground?


Wow, that answer from quikrete is terrible. You would need about 2.5 - 3 bags per hole for a 6 x 6 with proper size footing.

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Depends on the diameter of the hole you dug. 2 bags at the bottom and back-fill should hold it forever.

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Use one bag. Plenty of strength to anchor that size post at that depth.

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When digging a hole for a post, it is recommended that the diameter of the hole be at least 3 times the width of the post. For a 6” x 6” post, the diameter should be 18 inches. Additionally, the depth of the post hole should be one-half of the above-ground post height. Given that this post is described as being placed 3’ in the ground, it is presumed that 6’ will be above ground. For a single 18” diameter hole containing a 6” x 6” post that is 3 feet deep, approximately 12 bags will be required to fill it. This is an estimate, and will vary based upon waste, uneven sub-grade, etc.

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Less than one.

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