TB Lecture18 Post Tensioning Concrete Slabs

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Bridge Design

Text of TB Lecture18 Post Tensioning Concrete Slabs

  • EGNEGN--5439 The Design of Tall Buildings5439 The Design of Tall Buildings

    Lecture #18Lecture #18

    Post-tensioned Concrete SlabsBasic Concepts

  • Conventionally Reinforced Structures

    Versus

    Post-Tensioned Concrete Structures

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    Steel is tensionedprior to casting of

    the concrete

    PRE-TENSIONINGHOYER (German Eng.)

    (1938)

    Steel strands aretensioned afterconcrete has

    been cast

    POST-TENSIONINGFREYSSINET

    PRESTRESSING1928

    Eugene Freyssinet(France)

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    35% POST-TENSION

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  • EXTRUSION PROCESS USED TO PRODUCE UNBONDED SINGLE STRAND TENDONS

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