Prestressing

Part of speech: verb

Definitions

1. The technique of applying pre-compressive forces to materials, especially concrete, to increase their strength and durability under applied loads
2. A method employed in engineering to induce internal stress within materials prior to service application, enhancing their structural integrity
3. A process that involves applying compressive forces to materials ahead of time, which helps improve their resistance to deformation and failure under load

Etymology: The gerund and participle "prestressing" is built from "prestress," which is simply the prefix "pre-" (before) attached to "stress." The stress half has a longer road behind it. It descends from Latin "stringere," meaning to draw tight or bind, which shares its root with "strain" and "strict," and it reached English through Old French "destrece," a word for distress or hardship. Over the centuries, "stress" moved from the sense of hardship or affliction toward the physical idea of a force pressing or pulling on a body. The prefix "pre-" comes from Latin "prae," meaning "before" or "in front of," so the compound names a force applied in advance. In engineering, that is exactly what prestressing does: a concrete beam is put under compression before any load arrives, so that when weight is applied, the tension it creates is offset by the compression already built in. The name thus describes the timing of the stress itself, placed ahead of the load it will later resist.

Synonyms: pre-tensioning, preloading