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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
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
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
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
Earthmoving, underground, foundation construction: Horizontal, large diameter steel tubes/pipes are cross-lot braces that support side walls of excavation. The bracing system gets its name from bracing across the building lot, from one side to the other. Note that the bracing against the far wall is at both top and bottom of excavation. Budapest, Hungary July 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
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
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
See photo in original gallery.
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