inverted-tapered pile 



lifHlfi 



voids or 

 cavities 



high capacity, low frequency 

 vibratory hammer 



reservoir of granular 

 backfill or slurry 



ffiff J.H - 



granular backfill 



Step 1 : install inverted tapered pile, backfill and compact with vibratory hammer 



inverted-tapered pile 



granular backfill 



Step 2: installed pile 



Figure 27. Conceptual drawing of vibratory-installed backfilled piles, 



72 



