First off, I'm an aerospace engineer so please excuse the general incompetence in all civil and concrete matters(adsbygoogle = window.adsbygoogle || []).push({});

I would like to make a steel reinforced concrete anchor point to tie down an airplane. The force applied to the eye bolt tie down is 10,000 lbs at approximately a 30 degree angle. assume the concrete footing is cylindrical and the top of the concrete is level with the ground.

how would i go about calculating the required size/weight/etc... of the concrete footing to restrain this force? Is there an equation (or equations) for this? I assume there would be.

I guessed (remember, aerospace engr) that if each component of the force (x,y) was less than or equal to the weight of the concrete and the associated dirt pull out cone, I would be conservatively safe. Is there a dirt stickiness coefficient (the amount dirt tends to stick to itself)? the density of dirt (hard packed desert soil)?

It seems like these are all pretty elementary questions for anyone that has taken a class in foundations or the like, unfortunately that is not me. I've given it the good old google attempt...no dice.

any help would be greatly appreciated

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Civil Engr: Airplane tie-down hardpoint

Loading...

Similar Threads - Civil Engr Airplane | Date |
---|---|

Aerospace Pitching Moment of an Airplane | Saturday at 8:15 AM |

Why does ENGR Mechanics: Statics cover *hinged* trusses? | Feb 23, 2018 |

Beam size check | Apr 9, 2017 |

(APDL) use two sections in an static analysis (beam/column) | Aug 27, 2015 |

Test track's profile | Dec 9, 2014 |

**Physics Forums - The Fusion of Science and Community**