John Deere 7220 tractor pulls rubber tire compactor around dirt track track to compact it for training thoroughbred race horses. Churchill Downs, home of Kentucky Derby, Louisville, Kentucky, September 13, 2007.
John Deere 6430 tractor pulls rubber tire compactor around dirt track track to compact it for training thoroughbred race horses. Churchill Downs, home of Kentucky Derby, Louisville, Kentucky, September 13, 2007.
Bridge construction: Caterpillar D6M 140 horsepower, 15.5 ton crawler tractor bulldozer. In background is Caterpillar CP-563C single drum padfoot vibratory soil compactor. Broadway Bridge, Ann Arbor, 2003.
Earthmoving construction: Crawler mounted hydraulic backhoe reaches to excavate earth for basement. Laborer operates vibratory soil compaction machine in area recently excavated, beyond backhoe. In right background, soil is supported by timber breastboards. Breastboards are supported by structural steel H shape soldier beams, which were themselves driven as piles deeply into the soil, below bottom of basement. Cardiovascular Center, University of Michigan Hospital, Ann Arbor, 2004.
Bridge construction: Caterpillar CP563C single drum vibratory padfoot soil compactor. Broadway Bridge, Ann Arbor, 2003.
Bridge construction: Caterpillar D6M 140 horsepower, 15.5 ton crawler tractor bulldozer. In background is Caterpillar CP-563C single drum padfoot vibratory soil compactor. Broadway Bridge, Ann Arbor, 2003.
Soil, earth construction: Caterpillar 225LC track mounted hydraulic boom excavator with vibrating plate soil compactor mounted on boom rough grades soil and compacts it for road base. The vibrating plate is somewhat difficult to see, because part of its edge is covered with the soil. Green Road, Ann Arbor, Michigan 2005.
Soil, earth construction: Caterpillar 225LC track mounted hydraulic boom excavator with vibrating plate soil compactor mounted on boom rough grades soil and compacts it for road base. Green Road, Ann Arbor, Michigan 2005.
Soil construction, foundation construction: Nuclear gauge setup and setup tools, for measuring density of soil. Soil is fresh fill behind a retaining wall that has just been compacted by a manually operated vibratory soil compactor, and the technician is measuring soil density. On left side is geo-fabric to contain soil fines and water, for water to drain out at base of wall through flexible corrugated plastic soil tubing. Huron Parkway, Ann Arbor, 2005. (Note: Non-nuclear gauges have made nuclear gauges obsolete. See Electrical Density Gauge and Geogauge at www.humboldtmfg.com, which won the Nova Award for construction innovation.)
John Deere 7220 tractor pulls rubber tire compactor around dirt track track to compact it for training thoroughbred race horses. Churchill Downs, home of Kentucky Derby, Louisville, Kentucky, September 13, 2007.
John Deere 7220 tractor pulls rubber tire compactor around dirt track track to compact it for training thoroughbred race horses. Churchill Downs, home of Kentucky Derby, Louisville, Kentucky, September 13, 2007.
John Deere 7220 tractor pulls rubber tire compactor around dirt track track to compact it for training thoroughbred race horses. Churchill Downs, home of Kentucky Derby, Louisville, Kentucky, September 13, 2007.
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