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My Construction Photos > Steel frame supports horizontal rebars for cast in place concrete beam. Top steel is supported at proper height by a transverse rebar, and height can be adjusted by small chain fall. Top steel supports U stirrups, which can themselves support horizontal bottom steel. Note that steel rebar cage sags under its own weight and requires additional support along its length. Colorado Street, Denver, Colorado, December 4, 2006.
My Construction Photos > At far end, steel frame supports horizontal rebars for cast in place concrete beam. Top steel is supported at proper height by a transverse rebar, and height can be adjusted by small chain fall. Top steel supports U stirrups, which can themselves support horizontal bottom steel. Resteel sags under its own weight and needs additional support along its length. The resteel extends grade beams at near end, which has top steel exposed to bond to concrete slab floor. Colorado Street, Denver, Colorado, December 4, 2006.
My Construction Photos > Steel forms and green epoxy coated reinforcing steel for cast in place reinforced concrete bridge pier base in foundation pit. Ladders provide access for workers to complete preparations for concrete placement. Piers for completed east side bridge are in left background. The curved portion at bottom of completed piers coincides with curved forms in foreground, and the ~45 degree joint shown is connection of top of pier base to lowest field precast concrete modules of V-shaped pier legs. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
My Construction Photos > Steel forms and green epoxy coated reinforcing steel for cast in place reinforced concrete bridge pier base in foundation pit. The corner openings provide access for placing concrete, to be closed when concrete reaches the opening. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
My Construction Photos > Steel forms and green epoxy coated reinforcing steel for cast in place reinforced concrete bridge pier base in foundation pit. Ladders provide access for workers to complete preparations for concrete placement. Piers for completed east side bridge are in left background. The curved portion at bottom of completed piers coincides with curved forms in foreground, and the ~45 degree joint shown is connection of top of pier base to lowest field precast concrete modules of V-shaped pier legs. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
My Construction Photos > Green epoxy coated reinforcing steel extends above top of formwork for cast in place base for V-shaped bridge pier. We look over top of structural steel sheet piles surrounding foundation pit for west most pier, looking at protruding steel and top of form of the next pier base toward completed pier of east half of bridge. Woodrow Wilson Bridge replacement, Potomac River between Virginia and Maryland, Capitol Beltway, I-95/I-495. November 2006.
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 > Construction safety, fall protection: Worker walks along top of concrete basement wall more than 20 feet above the ground, among reinforcing bar tripping hazards, without any fall protection. He carries two safety lanyards and hooks, attached to full body harness and hooked temporarily at his right chest. Instead of protecting him, he repeatedly has them loop over extended rebars, which adds to the hazard. Michigan 2006.
My Construction Photos > Construction safety, fall protection: Worker is contorting himself reaching with his arm and foot around side of ladder, without using his fall protection. Ladder is itself a hazard, because it is supported at top by a rung against the vertical edge of the gang form. It has a loose wire tied around it and concrete bulkhead at top that provides no useful safety. Practice and OSHA law require top of the ladder to be supported equally by its two side rails. Worker carries two safety lanyards and hooks, attached to full body harness and hooked temporarily at his right chest. Michigan 2006.
Steel frame supports horizontal rebars for cast in place concrete beam. Top steel is supported at proper height by a transverse rebar, and height can be adjusted by small chain fall. Top steel supports U stirrups, which can themselves support horizontal bottom steel. Note that steel rebar cage sags under its own weight and requires additional support along its length. Colorado Street, Denver, Colorado, December 4, 2006.
My Construction Photos > Steel frame supports horizontal rebars for cast in place concrete beam. Top steel is supported at proper height by a transverse rebar, and height can be adjusted by small chain fall. Top steel supports U stirrups, which can themselves support horizontal bottom steel. Note that steel rebar cage sags under its own weight and requires additional support along its length. Colorado Street, Denver, Colorado, December 4, 2006.
Steel frame supports horizontal rebars for cast in place concrete beam. Top steel is supported at proper height by a transverse rebar, and height can be adjusted by small chain fall. Top steel supports U stirrups, which can themselves support horizontal bottom steel. Note that steel rebar cage sags under its own weight and requires additional support along its length. Colorado Street, Denver, Colorado, December 4, 2006.
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