Helical Piles

CASE HISTORY #19971009
Aug 10, 2009
Project Commercial Underpin Holbrook, AZ
Engineer Western Technologies, Inc Geotechnical
Underpinning Contractor Westcoast Helical-Piles, Corp Temecual California

Job Description: WHPC in conjunction w/ AHPC. This is a single-story, 40 year-old five-plex apartment building located in Holbrook in North Eastern Arizona. Slab-on-grade structure supported on shallow spread footings. The structure exhibited signs of distress along the west side as with a pronounced horizontal wave to the roof line (not shown) all due to settlement, caused by a leaking water line.

Repair: WHPC installed a total of 19 helical piles with three of these to underpin inside load bearing walls. Fig. #2 is of structure after it was lifted to level.

Before underpinning, notice cinderblock cracking due to a drop of the foundation.

Before: Roof rolling like ocean Waves

Fig. #2 Roof waves gone after underpinning

The WHPC helical pile underpinning results at the Holbrook Apts

Inside Before

Inside After

Outside Before

Outside After

Before

After