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My Construction Photos > Placing basement/foundation wall concrete. Worker on right holds last section hose/tube to direct cast in place concrete into top of wall form, as boom lowers hose/tube into top of form. Worker on left is moving concrete vibrator to extend it down into freshly placed concrete to consolidate the concrete and bond successive concrete lifts. Wall forms are gang forms built from Peri Trio wall form panels lifted into position by crane. Mosher Jordan Renovation and New Dining Center, University of Michigan, Ann Arbor, March 2007.
My Construction Photos > 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
My Construction Photos > Worker on forms at left is knocking form bolts loose to separate gang forms from concrete basement wall they cast. A worker walks along top of concrete basement wall more than 20 feet above the ground, among reinforcing bar tripping hazards, without all protection. He carries two safety lanyards and hooks, attached to full body harness and hooked temporarily at his right chest. Right foreground is Grove telescoping boom hydraulic crane. Michigan 2006.
My Construction Photos > Construction safety, fall protection: Worker supported by pipe on rear of gang form moves from one bay to the bay on its right, maintaining his fall protection by moving his two safety lanyard-hooks one at a time from his left side to his right. (He has moved from left of the blue-circled point to right of it.) Photo provides close-up view of galvanized steel (gray) turnbuckle columns that slope down from left to right, that can be rotated to push/pull form face against/away from the concrete. Michigan 2006
My Construction Photos > 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
My Construction Photos > 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
My Construction Photos > In background from far right to left are (1) concrete basement walls with forms removed, (2) vertical reinforcing steel for concrete basement walls still to be cast. (3) Gang forms in place for casting basement wall, (4) vertical reinforcing steel for concrete basement walls still to be cast. Sitting away from basement walls are 3 gang forms used for basement walls. Ashley Terrace, Huron St, Ann Arbor, Michigan 2006
My Construction Photos > 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
My Construction Photos > 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
Placing basement/foundation wall concrete. Worker on right holds last section hose/tube to direct cast in place concrete into top of wall form, as boom lowers hose/tube into top of form. Worker on left is moving concrete vibrator to extend it down into freshly placed concrete to consolidate the concrete and bond successive concrete lifts. Wall forms are gang forms built from Peri Trio wall form panels lifted into position by crane. Mosher Jordan Renovation and New Dining Center, University of Michigan, Ann Arbor, March 2007.
My Construction Photos > Placing basement/foundation wall concrete. Worker on right holds last section hose/tube to direct cast in place concrete into top of wall form, as boom lowers hose/tube into top of form. Worker on left is moving concrete vibrator to extend it down into freshly placed concrete to consolidate the concrete and bond successive concrete lifts. Wall forms are gang forms built from Peri Trio wall form panels lifted into position by crane. Mosher Jordan Renovation and New Dining Center, University of Michigan, Ann Arbor, March 2007.
Placing basement/foundation wall concrete. Worker on right holds last section hose/tube to direct cast in place concrete into top of wall form, as boom lowers hose/tube into top of form. Worker on left is moving concrete vibrator to extend it down into freshly placed concrete to consolidate the concrete and bond successive concrete lifts. Wall forms are gang forms built from Peri Trio wall form panels lifted into position by crane. Mosher Jordan Renovation and New Dining Center, University of Michigan, Ann Arbor, March 2007.
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