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    Prestressing Post Tension Mono Strand Hydraulic Jack

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    Prestressed Concrete Monostrand Stressing Jack Description of Stressing Jack 1, YGM-270 mono-strand Jack is a kind of general purpose for prestressing applied for pre-tension and post-tension of various steel strand anchors. 2, YGM-270 m ono-strand Jack is widely used in precast structures, such as prestressed bridge girders and decks units, rock and earth anchoring construction, hydraulic ...

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    reinforced concrete (RC) without prestressing. A fully prestressed concrete member is usually subjected to compression during service life. ... producing large prestressing forces. The hydraulic jack used for the tensioning of tendons, comprises of calibrated pressure ... the box girder of a bridge is prestressed with tendons that lie outside ...

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    THE SAFE STRESSING OF PRESTRESSED CONCRETE PRODUCTS . Ver.18 GB 16 October 2014 2 . PREFACE . ... involves the use of industrial prestressing equipment that uses hydraulic rams to stretch high- ... • Bridge beams • Rail sleepers

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    Hydraulic Round Piling Form The Copano Bay Bridge in Rockport, Texas is a three and a half mile project with a two mile bridge that included a 150-foot center span. The prestressed bridge is built with 54-inch beams, flat slabs and called for 460, 54-inch cylindrical piles.

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    Bridge Jacks | SLRBJ5 5,000 LB. Rolling Bridge Jack

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    Hydraulic Strand Jack System|Strand Jacking Is Pre

    A BRIEF OVERVIEW Prestressing is a technology by which beneficial loads are applied to structural members, mostly made of concrete. To a lesser degree, prestressing is also applied to steel, masonry and wood members. ... The strands are stressed with high-pressure hydraulic jacks and locked off with hardened, serrated steel wedges. Post ...

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    VSL - Multistrand Post Tensioning | Prestressed Concrete

    Prestressed Concrete Beam. Prestressed or pretensioned before it leaves the plant, a slight arch or camber is noticeable. ... Once the concrete is set then the steel wires are inserted through the tubes and then with help of hydraulic jack the steel wires are stretched and held in place with the help of special male female insert at the ends to ...

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    Zb4 500 Prestressing Hydraulic Pump For Prestressing

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    Prestressed Concrete Structures Questions and Answers

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    If beams are lifted by hydraulic jacks, each jack should have its own pump unit and the jacked ... prestressed construction. Bridge beams may be cut free of each other by normal concrete cutting procedures with all of the pieces to be separated being supported and restrained

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    The Ellis Bridge Jack / Modular Building Jack can support up to 80,000 pounds. This Screw Jack is the most heavy duty jack Ellis Offers. Shoring Jack. It can be used in lifting applications.

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    Feb 11, 2008· I am going to replace the bearings of a prestressed bridge (by jacking up the deck). ... Carefull with the hydraulic/jacking system. If all jacks are connected to the same line you might have equal pressure (and therefore equal load), not equal displacement, and that could create problems.

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    Comprehensive Design Example for Prestressed Concrete (PSC) Girder Superstructure Bridge Design Step 5 Design of Superstructure Design Step 5.4 Loss of Prestress (S5.9.5)

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    INVESTIGATIVE UPDATECollapse of Pedestrian Bridge Under Construction Miami, Florida (HWY18M... NTSB preliminary investigation ... Cover depth for prestressed concrete.pdf. ... The hydraulic jack is a piece of equipment used to apply the force necessary to adjust (stress or de-stress) the ...

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