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Thread: Square hole digging tractor attachment - GIF

  1. #11
    Supporting Member Saltfever's Avatar
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    Quote Originally Posted by neilbourjaily View Post
    I don't know why a drilled square hole would be useful.
    Often required when a post is supporting a cantilever load. (e.g., a free swinging gate). A round post will eventually sag as the soil is displaced away by the force acting on it. A square hole (actually, the flat side) has a lot more surface area reacting the lateral force. "Square" is frequently specified by soil engineers but often ignored by contractors simply because they only have a round drill or auger. Nobody wants to spend for hand digging.

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    Engineering was VERY lacking on this design as the “digger” should have thrown the dirt away from the operator! As for usefulness......graves!

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    hemmjo's Tools
    Quote Originally Posted by Wildwilly View Post
    Engineering was VERY lacking on this design as the “digger” should have thrown the dirt away from the operator! As for usefulness......graves!
    I was thinking along similar lines when it first started to dig, but the deeper it got the more the dirt went behind the machine, away from the operator.

  5. #14
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    and after all that, the bloody hole is round at the bottom.


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