5. Which one of the followings is not a reason of excessive local scour at bridge piers? a) Number of pedestrians walking on the bridge b) Contraction of the bridge opening (cross-section) c) Increased shear stress at bed level near the piers d) Vortex formation around piers -Which one of the followings is not a bridge scour countermeasure? a) Riprap placement around bridge foundations b) Increasing the diameter of the piers c) Using spurs to deflect flow at the upstream of a bridge site d) Using checkdams to accumulate sediment at the downstream of a bridge site 7. Which one of the following platforms is held in place by vertical, tensioneod tendons connected to the sea floor? a) Spar b) Semi-submersible c) Jack-up rig (MODU) d) Tension Leg Platform (TLP) .Which wave theory is used to model the waves in deep water (water depth >>0.5 x wave length)? a) Airy (linear) wave theory b) Stokes 2" order wave theory c) Stream function 5 order thcory d) Cnoidal wave theory

5. Which one of the followings is not a reason of excessive local scour at bridge piers? a) Number of pedestrians walking on the bridge b) Contraction of the bridge opening (cross-section) c) Increased shear stress at bed level near the piers d) Vortex formation around piers -Which one of the followings is not a bridge scour countermeasure? a) Riprap placement around bridge foundations b) Increasing the diameter of the piers c) Using spurs to deflect flow at the upstream of a bridge site d) Using checkdams to accumulate sediment at the downstream of a bridge site 7. Which one of the following platforms is held in place by vertical, tensioneod tendons connected to the sea floor? a) Spar b) Semi-submersible c) Jack-up rig (MODU) d) Tension Leg Platform (TLP) .Which wave theory is used to model the waves in deep water (water depth >>0.5 x wave length)? a) Airy (linear) wave theory b) Stokes 2" order wave theory c) Stream function 5 order thcory d) Cnoidal wave theory

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 27P

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