Bridges & Prestressed Concrete Practice Problems

12 problems · Structural Engineering

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Easyprestresseffective force
A prestressed member has 20 identical strands. Each strand has steel area 140 mm² and effective stress fpe = 1,100 MPa after all losses. Assume every strand is fully developed. What is the total effective prestress force Pe?

All 12 problems

  1. Total Effective Prestress Force · Easy
  2. Effective Stress After Prestress Losses · Easy
  3. Elastic Shortening Loss in Pretensioning · Medium
  4. Bottom Fiber Stress in a Prestressed Beam · Medium
  5. Prestressed Beam Stress at Transfer · Hard
  6. Kern Limit for a Rectangular Section · Medium
  7. Equivalent Load of a Parabolic Tendon · Medium
  8. Camber from a Straight Tendon · Medium
  9. Maximum Support Reaction from Axle Loads · Hard
  10. Design Live Load Moment per Girder · Medium
  11. Factored Moment for Girder Strength · Medium
  12. Bridge Load Rating Factor · Medium