Construction Equipment: Haulers, Excavators, Loaders, Earth Moving, Concrete, Foundations, Steel Structures, Buildings, Roads, Bridges, Civil, Engineering, Workers, Underground, Asphalt, Safety, Trucks, Masonry, Cranes : Photo Keywords : brace

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My Construction Photos > Grappler bucket teeth of Caterpillar 345B backhoe rip out open web joist/bar joist that supports roof, leaving roof to sag into opening. Basic building is concrete block structure that supports bar joist roof structure. Steel tension straps/bars in background provide diagonal X bracing/shear bracing against wind and other forces against the side of building. Washtenaw near Huron Parkway, Ann Arbor, Michigan. January, 2007.

My Construction Photos > Grappler bucket teeth of Caterpillar 345B backhoe reach into roof to rip out open web joist/bar joist that supports roof. Basic building is concrete block structure that supports bar joist roof structure. Steel tension straps/bars in background provide diagonal X bracing/shear bracing against wind and other forces against the side of building. Washtenaw near Huron Parkway, Ann Arbor, Michigan. January, 2007.

My Construction Photos > Precast concrete tilt-up construction: Specialized lifting hardware for tilt-up wall construction by which crane can lift reinforced concrete walls from horizontal casting position to vertical position in wall. Primary hardware is steel lifting stud/anchor/bolt/plug, attached to reinforcing steel or wire embedded in concrete, as shown in circled inset, as it looks after lift is completed and hardware has been released. This is lifted by ground release lifting hardware consisting of a clasp/lock/grip that fits over the lifting stud/anchor and grips it while the attached lifting eye/bale applies lift. The lifting clasp/lock/grip has a release arm by which an attached rope/chain/cable is pulled down by worker on ground to release the lifting hardware from the wall after lift has been completed. A lifting clevis (red here) provides attachment to crane cable by which wall is lifted. Photo shows lifting hardware in place on right, before ground man has activated its release arm by pulling on attached release chain. To left is lifting hardware after its release from lifting stud/anchor. Phoenix, Arizona, November 2006.

My Construction Photos > Precast concrete tilt-up construction: Reinforced concrete wall section was pulled up at its top by crane into near vertical position to form section of outside wall of building. Worker uses impact drill to make hole in slab into which to bolt bracket that supports diagonal shore/brace to hold wall up until roof structure is in place. Phoenix, Arizona, November 2006.

My Construction Photos > Precast concrete tilt-up construction: Reinforced concrete wall section has been pulled up at its top into near vertical position to form section of outside wall of building. Wall section is heavily reinforced concrete that was cast in horizontal position on top of floor slab of building, which alleviated the need for wall forms. It is lifted by steel cable, hooked to wall at a 8 points to provide force sufficient to break wall free from the slab beneath it and lift it into its final vertical position. Two point support from lifting beams/ harness and pulleys provide independent support to each lifting point. Pipe with screw jacks at end align the wall and support it against wind forces. Workers 3, 5, and 6, from left to right, hold chain/cable with which they will jerk out pens locking the lifting cables to the slab wall, and they will next pull to withdraw pens to separate lifting tools from the wall. Phoenix, Arizona, November 2006.

My Construction Photos > Precast concrete tilt-up construction: Reinforced concrete wall section is pulled up at its top into near vertical position to form section of outside wall of building. As foreman on right signals crane operator to hold position of tilted up concrete slab wall section, workers inside and outside manually position bottom of section to sit on its foundation, forming corner with previously placed adjacent section. Worker on left holds up adjustable shore so it does not drag on ground/slab and impact positioning. Phoenix, Arizona, November 2006.

My Construction Photos > Wood frame, residential construction: Workers push second floor preframed dimension wood exterior wall frame up into position. Wall was framed on horizontal, either on the second floor on which workers are standing or at some other place on the site and then brought into this position by the tower crane. Workers push the 2"x4" diagonal braces to help push wall vertical, and the workers can pull on the braces to prevent the wall from overturning and falling. Once wall is in vertical position, the workers will nail the diagonal braces to the wood subfloor to hold the wall in vertical position and support it against lateral forces such as wind. Note the diagonal 2"x4" boards nailed on edge on both sides of the windows, which give the framed wall sufficient strength to resist lateral loads during construction. Ann Arbor, Michigan 2004.

My Construction Photos > Concrete construction: Peri concrete formwork system wall panels in place for cast-in-place basement/ foundation walls. Panels consist of coated plyform on steel frames, connected by Peri connection system of edge clamps and pins. Cardiovascular Center, University of Michigan, Ann Arbor, 2004.

Grappler bucket teeth of Caterpillar 345B backhoe rip out open web joist/bar joist that supports roof, leaving roof to sag into opening. Basic building is concrete block structure that supports bar joist roof structure. Steel tension straps/bars in background provide diagonal X bracing/shear bracing against wind and other forces against the side of building. Washtenaw near Huron Parkway, Ann Arbor, Michigan. January, 2007.

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Camera: Canon (Canon Eos 5d) |

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Original size: 1638px x 1092px |

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Keywords: construction cat roof caterpillar demolition bucket steel equipment brace joist diagonal backhoe grappler open web bar joist

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