Why Should Buildings Use Post-Tensioning Systems?

By | Building Maintenance

Commercial concrete management, including post-tensioning systems, is critical to any residential or commercial high-rise and multi-level parking garage construction project. Post-tensioning involves placing prestressed steel “tendons” tightened once the concrete hardens. The additional stress of tightening compresses the concrete into its strongest state, ensuring it can support the external service loads (weight) once using the structure.  Failing to factor in the load-bearing capability of a structure can lead to catastrophic events, such as the collapse of the Hotel New World in Singapore in 1986. The six-story building collapsed in 60 seconds, resulting in 33 deaths. More recently, investigators are still trying to determine the cause of a partial parking garage collapse in Baltimore in July 2022. This article looks closer at post-tensioning systems, explaining what they are, how they work, and their benefits to construction and architecture. We’ll also present some practical applications of post-tensioning concrete, criteria to consider when evaluating such systems, and where to turn for post-tensioning repairs. What is Post-Tensioning? Post-tensioning is a unique design technique that reinforces concrete in commercial building construction. This process helps strengthen concrete, allowing it to hold up better post-construction, keeping structures secure and stable. Post-tensioning tendons generally consist of stainless steel and reinforced cable bundles. These run inside plastic coatings or sleeves, placed inside the casings where concrete is poured before filling. Afterward, the cables are tensioned and anchored against the other concrete edges.  The post-tension acts much the same as support beams and improves the safety and stability of concrete…

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