Prestressed Concrete Structures Practice Test 3

1. Which of the following equation is used to compute deflections of unilinear method?

2. The actual load deflection behavior is possible by assuming __________

3. The cold drawn steel wires have a modulus of elasticity of ____________

4. The net curvature ϕ_tat a section at any given stage is given as __________

5. A post tensioned cable of beam 10m long is initially tensioned to a stress of 1000n/mm² at one end, slope is 1 in 24 tendons curved at each end , area is 600mm², E_s is 210kn/mm², coefficient of friction between duct and cable is 0.55, friction coefficient for wave effect is 0.0015perm. During anchorage, if there is a slip 3mm at the jacking end, calculate final force?

6. The shrinkage of concrete is influenced by ___________

7. In post cracking stage, the behavior of the beam is similar to __________

8. The deflection of prestressed members can be computed relative to given __________

9. The creep coefficient is high for ___________

10. The excessive deflections are likely to cause damage to ____________