HC-Lecture19-PrecastConcrete

HC-Lecture19-PrecastConcrete - Heavy Construction Heavy...

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Unformatted text preview: Heavy Construction Heavy Construction Lecture #19 Lecture #19 Pre-cast concrete L Prieto-Portar 2008 Pre-cast concrete can be strictly structural, such as this parking garage. Pre-cast concrete can also be strictly architectural (that is, aesthetical), such as the external closure panels on this office building. Pre-cast elements come in many shapes and uses: a) Pre-cast columns and spandrel beams; b) Pre-cast beams; c) Pre-cast hollow-core floors; d) Pre-cast double-tee roof girders (which are also reinforced to provide parking on roof tops); e) Pre-cast architectural panels, for cladding and decorative closures. Characteristics of Pre-cast Concrete. Advantages: 1) Produced at ground level (increased job safety); 2) Controlled environment (plant versus a jobsite, increased productivity); 3) High quality steel formwork that is reused (increased savings); 4) High strength steel and concrete (larger spans and loads); 5) Controlled curing (high early strength, steam curing, 24-hr cycle); 6) Quicker erection time (no formwork required and no temperature restraints because the concrete has already cured)....
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HC-Lecture19-PrecastConcrete - Heavy Construction Heavy...

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