University of Chicago Library:
Workers walk beside rebar cages
University of Chicago Library:
Clamshell bucket is emptied
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Clamshell bucket excavates between guide walls
University of Chicago Library:
Rebar cage is lowered into position
University of Chicago Library:
Rebar cage is lowered into position
University of Chicago Library:
Gathering at work site
University of Chicago Library:
Rebar cage is secured for lifting
University of Chicago Library:
Rebar cage is secured for lifting
University of Chicago Library:
Rebar cage is secured for lifting
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Crane lifts rebar cage
University of Chicago Library:
Workers hold lead ropes to guide rebar cage into place
University of Chicago Library:
Crane moves rebar cage into place
University of Chicago Library:
Worker attaches spacer to keep rebar cage centered in panel
University of Chicago Library:
Two sections of rebar cage are placed in each panel
