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pile drivers, vibratory drivers, steam hammers, drilled piers, soil sampling, cranes, sheet piles, precast piles, H piles, double acting hammer, air hammer, diesel hammer, earth auger, drill, pole setting/setter, soil exploration.

My Construction Photos > Marine, bridge construction: Partial cofferdam around damaged bridge pier, made from rolled steel sheet piles, is in foreground. Note the supports on top of pier that carried bridge truss spans, that are now stored on river bank to be returned when pier is repaired. Other photos show construction work barges and equipment working to repair/replace pier. Danube River in Hungary west of Budapest, August 2006.

My Construction Photos > Marine/river construction: Construction barge carries Liebherr crawler mounted lattice boom, cable operated crane and ABI Mobilram pile drilling and vibratory/ impacting/ pressing rig. Barge also carries Sections of steel sheet piling to be driven to complete the cofferdam for bridge pier. Barge is controlled by construction tug. Danube River in Hungary west of Budapest, August 2006.

My Construction Photos > Marine/river construction: Construction barge carries Liebherr 974 Litronic hydraulic operated crawler mounted backhoe set up as an underwater dredge to shape river bottom for bridge construction. Barge is anchored by rectangular steel piers pushed a shallow distance into river bed. Danube River in Hungary west of Budapest, August 2006.

My Construction Photos > Marine/river construction: Construction barge carries Liebher hydraulic operated crawler mounted backhoe set up as an underwater dredge to shape river bottom for bridge construction. Barge is anchored by rectangular steel piers pushed a shallow distance into river bed. Danube River in Hungary west of Budapest, August 2006.

My Construction Photos > Marine, bridge construction: Two steel truss bridge spans removed from damaged bridge pier and stored on shore, to be returned to service once pier has been repaired/replaced. Danube River in Hungary west of Budapest, August 2006.

My Construction Photos > Road construction: Soil auger mounted on City truck crane boom drills a hole, at spot marked with orange paint, for pier to support lighting/sign. At auger bit full depth, boom lifts out auger after drilling to its depth, retaining a large part of the soil on the auger bit. City workers then shovel back the soil from hole to keep it from falling into the hole. Soil on bit will soon be placed in bed of truck on photo's right. Note truck crane outriggers are extended to support crane boom against overturning the truck.Huron Parkway at Huron High School, near Huron River, Ann Arbor, MI, 2005

My Construction Photos > Road construction: Soil auger mounted on City truck crane boom drills a hole for pier to support lighting/sign. At auger bit full depth, boom lifts out auger after drilling to its depth, retaining a large part of the soil on the auger bit. City workers then shovel back the soil from hole to keep it from falling into the hole. Soil on bit will soon be placed in bed of truck on photo's right. Note truck crane outriggers are extended to support crane boom against overturning the truck.Huron Parkway at Huron High School, near Huron River, Ann Arbor, MI, 2005

My Construction Photos > Road construction: Soil auger mounted on City truck crane boom lifts out auger after drilling to its depth, retaining a large part of the soil on the auger bit. City workers shovel back the soil from hole to keep it from falling into the hole. Soil on bit will soon be placed in bed of truck on photo's right. Note truck crane outriggers are extended to support crane boom against overturning the truck.Huron Parkway at Huron High School, near Huron River, Ann Arbor, MI, 2005

My Construction Photos > Road and fence construction: Truck mounted, highly specialized drop-hammer pile/post driver drives galvanized steel wide flange sections into ground to provide support for vehicle guardrails. Operator uses control levers to initiate lift of drop-hammer by cable and then its drop onto post/pile cap. Dixboro Bridge construction, Ann Arbor, Michigan, August 2005.

My Construction Photos > Construction pile driving: Vulcan 505 25,000 ft-lb 60 inch stroke single-acting air-driven air/steam hammer drives structural steel H piles into the ground. Piles are supported and guided by swinging leads which are supported by Manitowoc 2900WC crawler mounted open web boom cable operated crane. Delonis Shelter, Ann Arbor, 2003.

My Construction Photos > Construction pile driving: Vulcan single-acting air-driven hammer drives structural steel H piles into the ground. Previously driven pile is seen to this side of pile driving position, labeled "687". H piles to be driven are to the left. Compressed air hose to power the pile hammer is shown in foreground and going up to hammer. Piles are supported and guided by swinging leads which are supported by Manitowoc 2900WC crawler mounted open web boom cable operated crane. Delonis Shelter, Ann Arbor, 2003.

My Construction Photos > Construction pile driving: ICE 812 Vibro-Hammer vibratory pile driver/extractor drives sheet piles to form cofferdam at Huron River. Sheet pile sections are connected by interlocking edges, which allow vertical slippage during sheet pile driving. (See inset detail of circled connection in photo.) Pile driver is supported by crawler mounted cable driven open web boom crane. Worker inside cofferdam is cutting off the top of the sheet pile to the right with an acetylene torch. Broadway Bridge, Ann Arbor, 2003.

My Construction Photos > Construction pile driving: ICE 812 Vibro-Hammer vibratory pile driver/extractor drives sheet piles at Huron River. Inset shows jaws of pile driver gripping top of sheet pile. Broadway Bridge, Ann Arbor, 2003.

My Construction Photos > Construction pile driving: Worker inside cofferdam is cutting off the top of the sheet pile with an acetylene torch. Broadway Bridge, Ann Arbor, 2003.

My Construction Photos > Construction pile driving: Driving sheet pile with vibratory pile driver supported by truck mounted open web boom cable crane. Yellow rectilinear equipment to right of sheet piles provides power to the pile driver. Depot Street, Ann Arbor, 2004.

My Construction Photos > Construction pile driving: Truck mounted open web boom cable crane picks up and moves sheet metal pile into position to be driven. Depot Street, Ann Arbor, 2004.

My Construction Photos > Construction pile driving: Crew in foreground is prying apart steel sheet pile members, to load onto crane line. Crane is working with two pile drivers to align new sheet pile section to drive interlocked with adjacent sheet pile in place. Depot Street, Ann Arbor, 2004.

My Construction Photos > Foundation construction: Movax Robotic side-gripping pile driver demonstrates gripping, picking up, and rotating sheet pile into position, fitting its side edge to interlocking edge of adjoining pile, and driving it, under control of backhoe operator. Penetration is automatically tracked by LCD monitor and recorder. Pile driver is attached to tracked hydraulic backhoe-excavator. This innovation was presented the Nova Award by the Construction Innovation Forum in 2001 for innovation in foundation construction. CONEXPO, March 15, 2005, Las Vegas, Nevada.

My Construction Photos > Foundation construction: Movax Robotic side-gripping pile driver vertical jaws are shown open, exposing its circular gripping pads. The jaws close to grip, pick up, and rotate pile into position and drive the pile into the ground, under sole control of backhoe operator. Penetration is automatically tracked by LCD monitor and recorder. Pile driver is attached to tracked hydraulic backhoe-excavator. In 2001 the Construction Innovation Forum presented the Nova Award to the Movax Robitic pile driver for innovation in foundation construction. CONEXPO, March 15, 2005, Las Vegas, Nevada.

My Construction Photos > Pile construction: Vibratory pile driver drives rolled steel interlocking sheet piles to support embankment during construction. Pile driver is cable supported by Terex American HC80 open web steel boom tracked crane. The telescoping boom personnel lift on this side of crane is a JLG Sky Power 600S lift, used by the crew to work at top of piles. Huron Parkway South of Huron River, Ann Arbor, MI.

My Construction Photos > Pile construction: Pile driving tools: full-length prybar, full-length handled sledge hammer, sheet pile clasp and attached to looped cables, to lift top end of sheet piles. Note interlocking edges of rolled steel sheet pile sections. Huron Parkway South of Huron River, Ann Arbor, MI.

My Construction Photos > Pile driving construction: Delmag diesel driven pile hammer/driver attached to leads (guide) in use for construction support of earth cuts on Huron Parkway. Behind pile driver is steel framed cage to support and protect bottled gas cylinders. Ann Arbor, Michigan, 2005

My Construction Photos > Pile driving construction: Delmag diesel pile hammer drives sheet metal pile deeper into earth, following pile being driven by a vibratory pile driver. The pile hammer is supported by lead/guide to its right, which is supported by Link-Belt crane. The smoke is exhaust from ignition of diesel fuel, which ignites at bottom of piston fall, pushing the piston up again for the next cycle. Huron Parkway, Ann Arbor, Michigan, 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Manitowoc open web boom crawler mounted crane mounted soil auger bit on Case Foundation drilled shaft rig drill stem/Kelly bar, set up to drill hole/shaft in soil for drilled concrete piers to support soldier beams for permanent retaining wall. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Soil auger bit on Case Foundation drilled shaft rig drill stem/Kelly bar, set up to drill hole/shaft in soil for drilled concrete piers to support the black structural steel H section soldier beams shown in near background. A second auger bit is lying down in right foreground, and two shaft bottom muck bits/buckets are in left foreground and just to right of auger bit. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Caterpillar 9286 wheeled tractor with forklift lifts pier mucking/bailing bucket/bit from lying on ground to vertical, so the end of the kelly bar just above and to its right can be inserted into its yoke. Directly behind the mucking bucket is the temporary casing for the drilled pier into which the mucking bucket will be inserted to clean the bottom of the hole and leave undisturbed soil on which the pier concrete will be placed. Beyond and to the right of the mucking bucket is a soil auger bit that drilled the pier. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Crane inserts mucking/bailing bucket/bit mounted on end of kelly bar/ drill stem into temporary casing of drilled pier. Bucket has a slotted bottom, similar to the right end/bottom of the mucking bucket lying on its side at lower left. Kelly bar takes the bucket to bottom of the pier and rotates it to collect loose soil left from auger drilling so that concrete to come will rest on fresh, undisturbed soil. Right of the mucking bucket is a soil auger bit that drilled the pier. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Crane lifts mucking bucket out of drilled pier hole. The dark lower portion of the bucket shows the bottom of the hole is wet. The bucket apparatus will now be moved over flat ground to dump the muck out, so bucket can return to muck again. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Worker operates mechanism at top of mucking bucket that opens the bottom of the bucket to release/unload the loose, wet soil the bucket has accumulated by being rotated at the bottom of the pier hole. In background, another worker inspects the pier hole from which mucking bucket was withdrawn. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Bottom of mucking/ bailing bucket/ bit bottom was opened by worker at right, kelly bar has rotated the bucket, and bucket has spilled the loose, wet soil it removed from augered pier hole. A Bobcat skid-steer loader will clean up this cycle's leaving Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Worker has looped a fabric sling around top coil of reinforcing steel cylindrical cage. He now hooks ends of sling to Manitowac crane hook to lift reinforcing steel cylindrical cage and set it in drilled shaft. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier construction, concrete construction: Crane line is hooked sling and lifts reinforcing steel cage for cast in place reinforced concrete pier. The cage will immediately inserted into the drilled pier hole, and concrete will be placed around it to fill the pier. Huron Parkway, Ann Arbor, 2005.

My Construction Photos > Pier construction, concrete construction: Crane line is hooked to sling and lowers reinforcing steel cage for cast in place reinforced concrete pier into the drilled pier hole. Concrete from the ready-mix truck will be placed around it to fill the pier, and structural steel H-section will be inserted into the fresh concrete. Worker with white hardhat to left directs crane operator with hand signals. Huron Parkway, Ann Arbor, 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Concrete from readymix truck placed by chute in hopper of tremie to fill drilled/ augered reinforced concrete pier for retaining wall. Structural steel H-section will be inserted into pier as soldier beam vertical support for retaining wall. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Crew in mid-rear sets hopper and elephant trunk/ tremie to fill drilled pier hole with fresh concrete. A steel H section soldier beam will be inserted into the fresh concrete. Worker in mid-front is folding another trunk/tremie to be used again. Auger bit to its right drilled the pier now being filled. Concrete readymix truck waits to place another lift of concrete in pier. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Crew sets hopper and elephant trunk/ tremie to fill drilled pier hole with fresh concrete from readymix truck chute at upper left. The trunk of tremie is inserted into the center of the spiral ring/cage of vertical pier reinforcing steel. A steel H section soldier beam will be inserted into the fresh concrete. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Readymix concrete truck chute places concrete for drilled pier through hopper feeding elephant trunk to bottom of pier. A steel H section soldier beam will be inserted into the fresh concrete. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Crane brings H-section structural steel soldier beam into position above freshly placed reinforced concrete in pier hole. Soldier beam will be lowered and embedded in the concrete a depth of about 2/3 of its length, up to the wood cross-blocking about 1/3 from its top. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Wood cross-blocking about two-thirds up the soldier beam to set soldier beam at the proper elevation when embedded in fresh concrete in the retaining wall pier. Cross-blocking is attached to soldier beam using long bolts and rectangular steel plate washers. The soldier beam has been lifted by crane to be inserted into the pier that has just been filled with concrete. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: Crew guides soldier beam in position to be inserted into fresh reinforced concrete pier. Lumber has been framed to position beam correctly for retaining wall it will support. Worker on right guides Manitowoc crane operator with hand signals. Huron Parkway South of Huron River, Ann Arbor, MI, 2005

My Construction Photos > Pier, foundation construction, concrete construction: H-section structural steel soldier embedded in reinforced concrete pier. Right background are two reinforcing steel cages that will be inserted in hole to reinforce concrete in pier, and top of reinforcing steel cage is shown at top of the first two piers shown here. Concrete pier caps will be cast on top of these piers to support and align the concrete precast panels of the retaining wall. Huron Parkway, Ann Arbor, Michigan 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Formwork for concrete that will next be cast to create the pier cap that will provide accurate elevation alignment for precast concrete panels of the retaining wall. A steel plate between the flanges of the structural steel H-section soldier beam forms the top of the pier cap/top that will support the precast concrete panels. Vertical pieces of plywood align the circular steel form for the periphery of the pier cap. C-clamps anchor vertical wood blocks that support and align the steel plate and the plywood pieces. Reinforcing steel bars from the piers reinforcing steel cage extend from the top of the existing concrete and provide shear capacity that supports the pier cap from horizontal movement. Huron Parkway, Ann Arbor, Michigan 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Shim packs positioned on top of pier caps to support each end of precast concrete retaining wall panels at proper elevation and alignment. A precast panel rests on a shim pack on the left, and a shim pack is ready to support a precast panel on the right. A shim is a thin piece of material to adjust position of a structural element. Shim packs are stacks of metal or plastic or plastic coated metal shims, and the number and thickness of shims is selected to adjust for the actual distance between top of pier cap and specified erected elevation of the precast panel. Pier caps are intentionally a little less than specified erected elevation of precast panels to allow for precise adjustment of panel elevation with shims. Shim packs are placed just inside the outer flange of soldier beams, because the precast panels will be just inside the outer flange, which will provide support against the outward horizontal pressure of soil backfilled behind the retaining wall panels. Huron Parkway, Ann Arbor, Michigan 2005.

My Construction Photos > Retaining wall construction: Grove RT700B wheel mounted, hydraulic, telescoping 85 ft/33 m boom, 40 ton crane lowers precast concrete panel into position between the flanges of structural steel H section soldier beam. Superintendent, in green jacket, gives hand signals to crane operator. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Pier, foundation construction, concrete construction: Workers guide precast concrete retaining wall panel into position just inside the flanges of the H-section structural steel soldier beam as crane lowers it following hand signals of the superintendent in foreground. The panel will rest on the square shim packs on top of the pier caps of the deep drilled reinforced concrete piers. Soil will then be backfilled and compacted against the far side of the panel(s), and the panels will be supported by the outside flange of the soldier beams against the horizontal outward force of the compacted soil. In the background are the temporary casings used to support the sides of the drilled pier holes until concrete was placed in the holes. Huron Parkway, Ann Arbor, Michigan 2005.

My Construction Photos > Retaining wall construction: Crew inserts precast concrete panel against inside of flange of structural steel H section soldier beam. Precast concrete panel will support soil backfilled behind it, soldier beam will support the concrete panel against horizontal soil forces against it, and the soldier beam is supported by the concrete and soil pier in which it is embedded. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Retaining wall construction: Worker uses DeWalt rotary saw to cut short pieces of 2" x 8" dimension lumber to be blocking to position precast concrete panels against road side of structural steel H-section soldier beams. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Retaining wall construction: Crew forces wood blocking between the back side of precast concrete panel and back flange of structural steel H-section soldier beam to position panel for grouting and soil backfill. One worker uses leverage of 2x4 lumber to push panel toward outside flange while fellow worker hammers wood block to hold it there. Precast concrete panel will support soil backfilled behind it, soldier beam will support the concrete panel against horizontal soil forces against it, and the soldier beam is supported by the concrete and soil pier in which it is embedded. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Retaining wall construction: Contractor superintendent holds rod at top of placed precast concrete panel and City surveyor/inspector checks elevation. Allowable tolerance = 1/8 inch. Two workers install blocking at mid-left of photo, to position panel against front flange of soldier beam H-section. The angle of the clips attached to the panel shows the crane is no longer supporting the panel. Instead, the bottom of the panel rests on steel shim packs, which can be adjusted in thickness to meet elevation requirements. Black polyethylene silt/mud fence/barrier at right protects land surface to its right from water borne construction silt/mud. Huron Parkway South of Huron River, Ann Arbor, MI, 2005.

My Construction Photos > Soil, earth construction: Caterpillar 325L crawler mounted hydraulic boom backhoe excavator places soil fill behind and against the back side of soldier beam supported precast concrete panel retaining wall. Soil is compacted in 6" to 12" lifts/ layers by vibratory plate compactor. Caterpillar 950F wheeled tractor front end loader at rear left maintains soil pile so backhoe can easily fill its shovel to place soil behind wall. In right front is roll of geofabric that is used as inside liner for retaining wall. Huron Parkway, Ann Arbor, Michigan, 2005. Fill will be placed up to top of retaining wall, compacted in lifts specified by design, probably 6, 8, or 12 inches. Huron Parkway, Ann Arbor, 2005.

My Construction Photos > Soil, earth construction: Wacker WP 1550 manually operated walk-behind vibratory plate compactor compacting soil fill behind retaining wall. Geotech fabric covers back side of retaining wall. In distance is nuclear guage and technician that measures density of compacted soil. To right is unexcavated earth embankment. Fill will be placed up to top of retaining wall, compacted in lifts specified by design, probably 6, 8, or 12 inches. Huron Parkway, Ann Arbor, 2005.

My Construction Photos > 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.)

My Construction Photos > Earthmoving construction: Bobcat S300 skid steer tractor with heavy-duty hydraulic auger attachment mounted on front. CONEXPO, Las Vegas, Nevada, March 15, 2005.

My Construction Photos > Subsurface construction: Interoc AN 160 crawler rotary drill rig for heavy duty anchor drilling and micropile drilling requiring large-diameter or long-reach drill holes. CONEXPO, March 15, 2005, Las Vegas, Nevada.

My Construction Photos > Bridge construction, steel pile construction: Concrete bridge abutment sits on the soil embankment on east side of Merrimack River. Soil is supported by retaining wall formed of vertical structural steel soldier beams/piles driven deep into the soil. Soil is directly supported by timber breastboards inserted between flanges of H-sections. (See inserted detail.) Tyngsborough, Massachusetts 2005.

My Construction Photos > Subsurface construction: Terex Reedrill drilling bits/heads for rotating soil augers, as used for drilled piers and soldier beams. CONEXPO, Las Vegas, Nevada, March 15-19, 2005.

My Construction Photos > Utility construction/pole setting: Electrical power drilling/auger and pole setting rig. GMC 7500 chassis is base for pole setting drill and pole hoist/setter. Trailer carries accessories, tools, and supplies. Romulus, Michigan 2006

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