Giant auger drills a hole to form a cast pile.
Giant auger drills a hole to form a cast pile.

Injecting a 6,000 psi grout mix
Injecting a 6,000 psi grout mix

A rebar cage is forced into the fresh grout mix
A rebar cage is forced into the fresh grout mix

Installing new sewer line
Installing new sewer line

Compacting fill over the sewer
Compacting fill over the sewer

Driving a probe hole for density check
Driving a probe hole for density check

Density guage
Density guage

New rig for auger casting
New rig for auger casting

Top of an auger cast pile
Top of an auger cast pile