What is prestressing?

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Prestressing is a technique used in construction to introduce stresses in a structural member before it is subjected to loads.

Prestressing involves applying forces to a concrete element to counteract the stresses that will occur when the element is subjected to loads.
There are two main types of prestressing: pre-tensioning and post-tensioning.
Pre-tensioning involves placing tendons in a mold before pouring concrete, then releasing the tension after the concrete has hardened.
Post-tensioning involves placing tendons in ducts within the concrete after it has hardened, then applying tension to the tendons.
Prestressing helps to increase the load-carrying capacity and reduce deflections in structural members.

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