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Concrete Construction: reinforcing, forms, saw, shore, precast, erect

concrete form, reinforce, shore, erect, prestress, precast, demolition
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Concrete cast-in-place construction: Gang forms for cast-in-place (CIP) reinforced concrete deep foundation/basement walls. Gang forms are sets of large form panels attached and braced together and moved by crane from place to place to cast large sections of concrete. The vertical concrete wall at lower right was cast using the gang form in middle of photo, rotated 90 degrees. It has been lifted and rotated into its current position by the crane. It will probably be lifted and rotated to form the wall section to the immediate left of the one it recently placed. Another gang form is in place on the right wall against which the next wall section will be cast. Workers at right are finalizing the details of reinforcing steel in preparation for the form to be placed. Reinforcing steel is being erected for the far wall to follow the wall on the right. In photo center is JLG telescoping boom man lift. The orange “mushrooms” in extreme foreground are reinforcing rod caps to protect workers who might fall onto the ends of the vertical rods. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
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Concrete cast-in-place construction: Gang forms for cast-in-place (CIP) reinforced concrete deep foundation/basement walls. Gang forms are sets of large form panels attached and braced together and moved by crane from place to place to cast large sections of concrete. The vertical concrete wall at lower right was cast using the gang form in middle of photo, rotated 90 degrees. It has been lifted and rotated into its current position by the crane. It will probably be lifted and rotated to form the wall section to the immediate left of the one it recently placed. Another gang form is in place on the right wall against which the next wall section will be cast. Workers at right are finalizing the details of reinforcing steel in preparation for the form to be placed. Reinforcing steel is being erected for the far wall to follow the wall on the right. In photo center is JLG telescoping boom man lift. The orange “mushrooms” in extreme foreground are reinforcing rod caps to protect workers who might fall onto the ends of the vertical rods. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006

Cast in placeconcreteconstructiongang formformformworkreinforced concretedeepfoundationbasementwallpanelreinforcingsteelAshley TerraceHuronAnn ArborMichiganrebarbuildingstructure

  • Concrete cast-in-place construction: Gang forms for cast-in-place (CIP) reinforced concrete deep foundation/basement walls. Gang forms are sets of large form panels attached and braced together and moved by crane from place to place to cast large sections of concrete. The vertical concrete wall at lower right was cast using the gang form in middle of photo, rotated 90 degrees. It has been lifted and rotated into its current position by the crane. It will probably be lifted and rotated to form the wall section to the immediate left of the one it recently placed. Another gang form is in place on the right wall against which the next wall section will be cast. Workers at right are finalizing the details of reinforcing steel in preparation for the form to be placed. Reinforcing steel is being erected for the far wall to follow the wall on the right. In photo center is JLG telescoping boom man lift. The orange “mushrooms” in extreme foreground are reinforcing rod caps to protect workers who might fall onto the ends of the vertical rods. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
  • Concrete cast-in-place construction: Gang forms for cast-in-place (CIP) reinforced concrete deep foundation/basement walls. Gang forms are sets of large form panels attached and braced together and moved by crane from place to place to cast large sections of concrete. The vertical concrete wall at lower right was cast using the gang form in middle of photo, rotated 90 degrees. It has been lifted and rotated into its current position by the crane (see boom shadow) and cables attached to its top. It will probably be lifted and rotated to form the wall section to the immediate left of the one it recently placed. Another gang form is in place on the right wall against which the next wall section will be cast. Workers at lower right are finalizing the details at bottom of reinforcing steel in preparation for the form to be placed. Reinforcing steel is being erected for the far wall to follow the wall on the right. Still another gang form in the lower right corner of photo is still in place after casting the lower right corner of the basement. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
  • Reinforcing ironworkers tie reinforcing steel mats together in preparation for casting the concrete foundation/basement wall. Each is tied to the steel in two places with safety hooks, lanyards, and full body harness to provide protection from falling. As they move, they alternate unhooking and hooking their hooks top always have one safety tie in position. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
  • Two reinforcing ironworkers wire lower end of cable slings to reinforcing steel mat, with upper end wired to erection/lifting beam, for crane to lift and transport mat to build cast in place reinforced concrete basement wall. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
  • Crane moves concrete wall gang form into position. Visual analysis of form structure shows it is pieced together from 8 form panels. Already in place are the opposing side of the forms, reinforcing steel, and form bulkhead. The bulkhead forms a temporary construction joint, against which the next concrete will be placed, after which the bulkhead is removed so the following concrete can be placed against the last concrete placed. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
  • The dark object is a structural steel plate to which steel studs/rods have been welded, which the two workers are attaching to the inside of the wall form so the studs will be embedded into the basement wall, and the face of the plate will face outward from the concrete wall. The two workers are standing on the work platform of a JLC hydraulic telescoping boom man lift. Toward us are the controls by which the workers can control travel of the lift and boom. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
  • Cast in place concrete construction: Cast in place concrete structure for addition to school. Reinforcing steel protrudes from top of columns to be imbedded into concrete columns of next floor. Adjustable length shoring supports forms for casting the floor slab for second floor. Vertical adjustable length shores support formwork girders, which support formwork joists that support slabe sheathing that supports cast in place concrete slab ceiling/floor. On top of slab forms are stored lengths of horizontal shoring and sheathing. Mast of tower crane is in upper middle of photo. Orange vertical material is structural clay tile wall. Passau, Germany July 2006
  • Concrete construction, formwork, cast in place: Structure to support slab for interior room. Welded steel tubular modular scaffold sections support screw jacks bearing stirrups turned upward. Scaffold sections are supported against lateral loads (loads from the side) by steel cross braces. Cap beams span stirrup supports and themselves support steel/aluminum stringers, which in turn support aluminum joists that parallel the cap beams. Joists support sheathing, probably plywood, which directly supports the cast in place concrete. A similar structure supports the other end of joists. Reinforced concrete structure commercial building at central square of the town of WaterColor, Florida Panhandle, June 2006.
  • Concrete construction, formwork, cast in place: Gang form now erected above and to right of arch was previously used to cast the concrete above and to left of arch. The entire form module was moved from left to right. The window/door holes on left side were formed by block-outs between the form walls, and they are repeated on the right. A block-out is a rough frame between the exterior forms that prevents cast wet concrete from entering a space. Reinforced concrete structure commercial building at central square of the town of WaterColor, Florida Panhandle, June 2006.
  • Concrete construction, formwork, cast in place: Gang form now erected here above and to right of arch was previously used to cast the concrete above and to left of arch. The entire form module was moved from left to right. The window/door holes on left side (see other photo) were formed by block-outs between the form walls, and they are repeated here. A block-out is a rough frame between the exterior forms that prevents cast wet concrete from entering a space. Reinforced concrete structure commercial building at central square of the town of WaterColor, Florida Panhandle, June 2006.
  • Concrete construction, formwork, cast in place: Cast in place concrete after form is removed. The gang form used here is now erected above and to right of arch. The entire form module was moved from here to right. The window/door holes here were formed by block-outs between the form walls, and they are repeated on the right. A block-out is a rough frame between the exterior forms that prevents cast wet concrete from entering a space. Reinforced concrete structure commercial building at central square of the town of WaterColor, Florida Panhandle, June 2006.
  • Concrete/residential construction: Schwing truck mounted concrete pump and hydraulic boom receives concrete from Mack readymix concrete truck and places it in Arxx hollow polystyrene insulating plastic wall forms. Outriggers extended from pump truck stabilize truck/pump as boom reaches and changes position. Pensacola, Florida June 2006.
  • Concrete/residential construction: Cast in place concrete is being placed into Arxx hollow polystyrene insulating plastic wall forms using plywood side forms at top of sloped Arxx wall forms. From right to left, workers are (1) placing concrete on right side of forms through elephant trunk extending down from the end of the hydraulic boom of a Schwing truck mounted concrete pump; (2) removing top form panels from top of concrete/forms on left side of wall; (3) filling in and troweling top of cast concrete, and (4) extending vibrator into concrete placed prior to that in the left side of the wall. At lower center of photo is window opening with shore and bottom forms to support concrete placed above window until the concrete attains sufficient strength to support itself and loads imposed above the window. Pensacola, Florida June 2006.
  • Concrete/residential construction: Schwing truck mounted concrete pump and hydraulic boom receives concrete from Mack readymix concrete truck and places it in Arxx hollow polystyrene insulating plastic wall forms. Outriggers extended from pump truck stabilize truck/pump as boom reaches and changes position. Pensacola, Florida June 2006.
  • Concrete/residential construction: Residential wall construction using Arxx hollow polystyrene insulating plastic wall forms filled with reinforced cast in place concrete. Upper left-middle shows rebars extending out of lower floor wall concrete to tie that concrete into the next higher section of concrete wall.  Interior framing on lower floor is galvanized steel sheet metal studs and ceiling joists, with temporary  shoring, supporting cast in place ceiling/floor above. Second level ceiling is heavier sheet metal studs to support floor above it. Pensacola; Florida June 2006.
  • Concrete/residential construction: Arxx hollow polystyrene insulating plastic wall forms scraps showing the hollow core and the metal ties/reinforcing supports on the interior. Pensacola, Florida June 2006.
  • Reinforced concrete construction: Reinforcing steel for scalloped shape curved cast-in-place concrete wall. Scallop bent 1x4 boards form template for placement and wire tying of vertical reinforcing steel for concrete wall. Cross members provide stable anchorage for horizontal flat lumber. Resteel is tied to the lumber template. New Ann Arbor high school 2006
  • Reinforced concrete construction, construction safety: Bright orange protective/safety rebar caps blunt the ends of rebars to protect workers from most serious injury, should one fall upon extended rebars. The rebars extend from continuous footings to tie into reinforced concrete wall that is supported by the footing. New Ann Arbor high school 2006
  • Concrete/masonry construction: Outside exhibits of concrete placement, distribution, screeding, textures, finishing. Demonstration area with grandstand is at lower left.  World of Concrete/Masonry, Las Vegas, Nevada January 2006
  • Concrete/masonry construction: Outside exhibits of concrete placement, distribution, screeding, textures, finishers. World of Concrete/Masonry, Las Vegas, Nevada January 2006
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