Pile Fixity
Pile Fixity
(OP)
I am at a loss as to the term 'pile fixity' and its importance relative to a laterally or axially loaded pile.
My understanding is that it is a depth at which there is no lateral deflection. Why would this be important in pile design?
My understanding is that it is a depth at which there is no lateral deflection. Why would this be important in pile design?





RE: Pile Fixity
See "How To Determine Lateral Load Capacity Of Piles" and "Laterally Unsupported Timber Pile Study" on this page of my website
http://www.slideruleera.net/AWPI-Page.html
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RE: Pile Fixity
From this moment, the size of the pile, also considering maximum allowable deflection, can be determined. A pile that resists lateral load is merely a pole footing, and subject, for the post part, to the equations to design the embedment depth - also subject to the design recommendations of the Geotech.
For only axially loaded pile, the point of fixity is not so much a concern, but definitely is for any pile that resists any lateral load.
Mike McCann
McCann Engineering
RE: Pile Fixity
It sounds like the 'fixity' condition above does not consider the soil interaction??
RE: Pile Fixity
The concept of fixity does take the soil interaction into account, but not directly. The computed depth to the point of fixity for the same pile / loading condition varies depending on the soil properties, as judged by the Engineer. This is a good example of why "engineering judgment" was a valuable commodity in days gone by.
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RE: Pile Fixity
RE: Pile Fixity
RE: Pile Fixity