What does 'Fixity' mean with respect to punching a pile?

'Fixity' in the context of punching a pile refers to the condition where the pile is vertically stable and securely anchored in the soil. This is crucial in structural engineering and marine construction, as the fixity of the pile ensures that it can adequately transfer loads from the structure above into the ground below.

When a pile is said to have fixity, it implies that it has been installed properly, allowing it to resist lateral and vertical forces. This stability is essential for the longevity and safety of structures supported by piles, particularly in environments where soil conditions may vary or where there are dynamic loads, such as from waves or wind.

Options related to partial stability, movement during installation, and depth of driving do not accurately capture the full concept of fixity, which specifically emphasizes the pile's secure and stable position once installation is complete. Understanding fixity is fundamental for ensuring structural integrity in pile-driven foundations.