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Sakshee Dadheech

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Week 5 – March 19, 2026

19 - 25 Mar 2026

Prestressed Concrete – Service Behaviour
Estimated Time: 1–2 min | Difficulty: Beginner

Question
The primary structural purpose of prestressing in concrete girders is to:

  1. Increase shear strength
  2. Counteract service-level tensile stresses
  3. Reduce dead load
  4. Improve fatigue resistance in steel
Explanation

Explanation:
Prestressing introduces compressive force to offset tensile stresses under service loads, reducing cracking and improving durability and long-term performance.

 

Learning Resources:

  • CSA S6:19, Clause 8.8 (Flexural and axial loads)
  • Collins & Mitchell, Prestressed Concrete Structures
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