Question by  ouprobablylackthedisciplinetosti (64)

What is the depth of a post hole when building a pole barn?


Answer by  HelpfulAndy (1107)

This depends on where you live. if you are in the north, above the frost zone, you'll probably need to go at least three feet deep. If you live in the south, you can probably go a little more shallow, but it can't hurt to go down to about three feet for maximum stability.


Answer by  TheScientist (86)

It depends both on the diameter of the pole, the height above the ground it will be standing when erect, and the density/moisture content of the foundation material. A good rule of thumb is a little less than 1/4 of the distance from ground to the height you want the top of the pole (and barn) to be.


Answer by  joeinphilly (388)

You will need to be below the frost line for your part of the country, 3 feet should work in the lower 48 and rent a gas auger.


Answer by  Homepro6885 (192)

Most ot your hole's for pole barn post are about 3' 6" feet with about 6 inches to 8 inches of concrete in the bottom for post to sit on.

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