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Jackson6612 Posted 18 years ago
Grammar

to introduce internal stresses into (as a structural beam)...

0 00prestress02br
00to introduce internal stresses into (as a structural beam) to counteract the stresses that will result from applied load (as in incorporating cables under tension in concrete)02br
00[M-W's Col. Dic.]02br
02br
00I couldn't understand the above definition.02br
00 0-
  

Top answer

0As civil engineer, I'm probably entitled to answer. 05002br 02br 00When you apply a load on a beam, the load produces different types of stresses on it (tension, compression, and moment). 02br 02br 00When you prestress a cable of steel, you apply a tension stress on the cable before pouring the concrete.

— Tanit

  • 0As civil engineer, I'm probably entitled to answer.
  • 05002br 02br 00When you apply a load on a beam, the load produces different types of stresses on it (tension, compression, and moment).
  • 02br 02br 00When you prestress a cable of steel, you apply a tension stress on the cable before pouring the concrete.
  • By doing so, once the concrete becomes solid, the cable will tend to go back to its original length; as a result, the prestressed cable will apply a compression stress on the beam; this compression stress will counteract the tension stress coming from the "applied load" (=the load you put on the beam).
  • 02br 02br 00Does that make sense?
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2 Answers
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0As civil engineer, I'm probably entitled to answer. 05002br
02br
00When you apply a load on a beam, the load produces different types of stresses on it (tension, compression, and moment). 02br
00Concrete is good when it comes to absorbing compression, but very weak as for tension stress (that's why pillars and beams have steel within), and this weakness puts a
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0 Thank you for the explanation, Tanit. 0-
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